There are really still that many tracks left? Damn. In late 1997, I remember the Estate claiming that there were 153 unreleased songs (give or take a couple), and since then (after Gridlock'd and Gang Related soundtracks and the RUSD album) there have been around 80 unreleased tracks released on Tupac albums--and I excluded posthumous remixes of old songs (e.g., My Block and Loyal to the Game), remixes of songs on the same album (e.g., Let Em Have It and Thugz Mansion), and even unreleased songs from other albums (e.g., Initiated and Don't Stop). So that leaves a bit less than 80 left based on what the Estate claimed in late 1997. But if you say that there are still over 100 tracks remaining, then that is just awesome... plus that must mean you have access to tracks that Amaru either can't get a hold of for whatever reason or doesn't know exist.
It seems like you've met your fair share of individuals affiliated with Pac's music (producers, rappers, etc.)... have you networked with individuals close enough to make this pipe dream a reality? I think that nearly 10 years after Pac's death, it's evident that E.D.I. and Kastro are clearly not the best for the job, plus I'm sure you would be willing to do it for a cut much smaller than what they probably get for their diluting of great music.