if you can't spend the coin for the pushrods/springs/cam support stuff, don't break yourself again on the cam. Buying a small cam that doesn't need a stall or the supporting stuff usually means smaller gains.
If you really want to do one, why not try something like the 'vette cam takeouts, you can get one and springs for a good price used, it will give you some gains, and its driveable on a mostly stock setup. Plus its cheap