Really good finds.You have the makings of a nice system in the works. You didn't mention the most important link in the audio chain, though....what speakers are you using? I just got a set of near perfect Dynaco A-25 speaks from a thrift for $19.99. You really can get some amazing deals if you check every so often And BE WARNED, my friend... Thrift-store audio gear shopping can turn into a SERIOUS addiction. It becomes a sickness. I'm infected already....

If you havent found it already, there is a really good site I frequent called AudioKarma.org .
I think you'd really enjoy it, go have a looksee.