Sounds cool, and getting outside of your safety zone's always great.
I think I'd just go through some
- Tool (Schism - took a while to nail that to the click, Forty six & 2, The Grudge, Undertow etc)
- stoner (Kyuss: Demon Cleaner, Asteroid for example, Helmet)
- scales and modes with position variations etc. (While I respect Dream Theaters John Myung, I think that he does way too many notes
- unspecified math/progressive rock of your choosing, or some tech death/prog metal, if you will (f.ex. Gojira, Opeth, Mastodon, whatnot)
Good luck and congrats!