Cool I am thinking of:

1) Case/power supply
2) VCO
3) VCF
4) VCA
5) 2xEGs
6) Utilities: slew, clock, mults
7) LFO

That keeps budget as close to under 2k for a starter system to learn on and grow later. I don't have 50k for a wall system right now and the nice prepackaged systems are too expensive. Doepfer A100 is the least expensive one at 2.5k though and the Endorphin.es looks neat as well.