well, the OP's budget was 100, and he spent that on the wheelset, so he is where he is. personally, with this bike, i think the best move would be to pull the dr's off and run it as a SS. with a bike of that vintage, the best money would be spent on

tires
tubes
brake pads
bar tape
saddle
pedals
multi-tool

that would be my buy list if i wanted to keep things super cheap with this frame. good luck with the conversion though, i'm all for being inovative with the stuff you have. remember, you can probably always resell the wheels and start over if you think you may be in too deep.