Hello All~ I have aquired a Mongoose paver 700c 28inch wheels, 7 speed, aluminum body with verticle dropouts that was abandoned by my brother 3-4 years ago. It had been damaged (ran over a car i think) which left the rear rim ruined but the frame appears to my eye to be undamaged. I want to order a new rear wheel and convert to a single speed. It has a 36 tooth sprocket. The chain is very rusty as the bike has been exposed to weather during this time. I need advice on what type wheel/axle and/or conversion kit to purchase to safely and economically get this bike going (target budget around $75 if possible). Any other related advice on what I might need to check, lube,ect before riding would be appreciated . Thanks. Jeff