He knew where they were because he was the one that leading there, yes. Doesn't mean that it doesn't physically take him time to get places.
Soooo he needs time to beat AVALANCHE to places where he's leading them, but which they already are at (in which case he's already been there too since he's leading them to those places)? I'm sorry, what?
Shikamaru said:
And Avalanche didn't find the Keystone. Dio did, Sephiroth's drinking buddy.
If you're going to take that argument, you could say Dio didn't find it, the weapon seller east of Gongaga found it. AVALANCHE still came across it, which was my point.
And, really, you're just emphasizing my point better than I did: if ordinary people could come across the thing, then the human-alien hybrid with a host of supernatural abilities certainly should have been able to. And we still don't even know that Sephiroth
needed the Keystone to enter the temple.
Dacon said:
Yeah, you think. I don't see what's so "silly" about anything when you're basing an argument off of speculation.
Okay, let me rephrase in a manner that doesn't needlessly sound like speculation: He undeniably had plenty of irrefutable, incontestable experience with his consciousness being separated from his original body.
Dacon said:
Also, I mean throwing away your body, the body you've lived in for years, when you can save it without a second thought is no easy task.
Five years is time for plenty of thoughts.

It's not like he could choose between instantly saving his body and carrying out his plan or just carrying out his plan. It was not a "without a second thought" matter.
Dacon said:
Also, Safer Sephiroth is only easy if you overleved. If you jump right into the crater first chance you get it can be a pretty fun fight.
Well, in fairness, so can Synthesis. That fight is only super easy, again, if you've overleveled.
But, yes, Safer is a legitimately more difficult battle.
Dacon said:
Why would he throw away his body when he could make it more powerful than Jenova with what he knew and could do?
That's the thing: Where are we getting this distinction between him and JENOVA on a physical level in the first place? It's obviously JENOVA's anatomical features (the Reunion) that allowed Sephiroth to reconstruct his original body, what with its cellular material permeating his entire physical structure.
On a physical level, where are we really finding such a difference between Sephiroth's body and JENOVA's body? Certainly there's a real distinction between "This is the body Sephiroth was born in" and "This is Sephiroth's extended body," but when looking at what they should be capable of, that should begin and end at the amount of energy they've absorbed and/or the presence of Sephiroth's will.
Any actual difference in the capabilities of the two where Seph's will isn't involved should only be attributable to the Lifestream energy he'd been pouring into his original body. We know that had been going on because he would have had to use a lot of spirit energy to cast Meteor:
Cloud
"As long as we have this, Sephiroth won't be able to use Meteor."
Cloud
"Mmm?"
"Can you guys use it?"
Aerith
"Nope, we can't use it right now. You need great spiritual power to use it."
Cloud
"You mean lots of Spiritual energy?"
Aerith
"That's right."
"One person's power alone won't do it."
"Somewhere special. Where there's plenty of the Planet's energy..."
So, if you take Seph's will out of the equation, yeah, you might have a more powerful body when looking at his original body than any other piece of JENOVA, but that's nothing inherent to his body, and -- as far as we've been given reason to believe -- it shouldn't be something he couldn't have done with any other piece of the alien's body.
Now, if you want to make the suggestion that Seph could only absorb Lifestream with a body born on Gaia, feel free. Though we don't really have a reason to believe this, that would be a more reasonable suggestion, and one with some measure of legitmacy to the assertion that there's something inherent in the power of Sephiroth's original body that should have made him want to recreate it rather than pursue his plans without it.
In fact, were he under that constraint, he couldn't have enacted his plans without his original body. His unique physiology (which, again, he got from JENOVA anyway) probably had something to do with why he could absorb so much Lifestream without his body becoming mutated like those poor bastards in the Nibel reactor.
That's a fair enough suggestion.
But just "Why would he throw away his body when he could make it more powerful than Jenova?" isn't, because I can simply say to that "Why
wouldn't he throw away his original body when he's been used to operating without it anyway and could make the parts of JENOVA just as powerful,
plus he wouldn't have to wait around for years to get things underway?"