You're invited.
I still think the biggest bang for your buck would be a 36v/72v parallel/series setup with a 36v controller for your low speed/smooth operation and 72v direct connection for 100% efficient (in the controller sense) strong accel, higher speeds & cruising.
PS:
http://galaxy22.dyndns.org/ev-talon/
72v Eagle Talon - 54 mph on level ground.