There goes my paycheck

Just bought a 92 gt. Stock motor except for the headers back. I've got parts coming for a manual conversion already because the aod in it has seen better days. I've got a c4 in the garage but I'm leaning towards t-5 swap. I think a t-56 would be pretty cool too:D . The thought of having double overdrive sounds awesome. Anybody think a t-56 is a bad idea?