I'm into metal, but i also like stuff like Pink Floyd. on my amp (Vypyr) i found an awesome PF type sound (Red Brit with Rotary Speaker). i jammed and it sounded cool.

what kind of scales, chords, and chord progressions would sound good?
thanks in advance
Alesis Multimix 8 USB 2.0
Alesis DM6
Two Colling's acoustics (my dad's)
Ibanez SoundGear bass
Epiphone Nighthawk Custom Reissue
Ovation 12-string (also dad's)
Sony 5.1 system