Heh!
Too bad you don't live down this way (upstate SC), I have a 135 with stand and VHO's that I want to get rid of...
As far as the sump goes, why not just get a 20 gal rubbermaid container. Easy to drill (need a 2&3/8" hole saw for a 1&1/2" ID bulkhead) to place an external pump, cheap, and at worst, you might need to reinforce the sides with a 2x4' frame to keep the sides from bowing. Either that or look for a scratched up 30 gal acrylic tank and do the same. No point in spending what it would cost to get a custom made sump for a tank that small, much more practical and cheaper to go with something DIY.
HTH