I'd like to develop a two or three hour technique practice schedule. I don't want to include any theory or song learning in it because I do plenty of those throughout the day when I'm just sitting around with nothing to do.

Can anyone help me come up with a good routine? I'm looking to develop into a thrash/death player so some kind of routine that includes every basic and advanced thing I'll need for that would be wonderful.
Ok, lets see. Id go:
15 minute warm up exercises (Chromatics Etc)
30 Minutes Palm mute chords and gallops
15 Minutes Hammer ons and pull offs
30 Minutes Sweep Picking and Fast Alternate picking
30 + Minutes Jamming/Improvising/Songwriting.