It's always good to have more than you need, but you got the cart before the horse.. The type of watts you're seeing are typically for BASS work.
500-XXXX watt not uncommon. The issue is "GREAT watts", you have on hand..
Say WHAT? 20-100 watts per channel of HIGH quality watts is the place to start. The XXXX will be for the Subs and bass duty..
Do a little checking and understand Vintage is wonderful, IF that is how you started.. I started there 50 years ago, I'm still collecting.
For convenience and the sake of MONEY, steer clear of the older stuff for now..
A good integrated amp
A GREAT receiver (there are some)
or
Separates like Parasound for less money but great reliability..
Zpre3 and Zamps or an A21 or 23. You will be very happy..
AND NOT BROKE..
Parasound is entry level to some.. It is top of the line to others.
I see it as good reliable HiFi equipment, not mid fi by any means.
So we are clear, I have 25+ pieces of Mac gear, not to mention another 25 of mixed varieties.. Marantz, HK, VTL, Cary.
They need proper storage and to be fired up, at least 1/2 dozen times a year to keep things pretty fresh..
Be noisy for a couple weeks, collect some information.. Come up with a budget. AND STAY THERE..
Happy hunting, enjoy. It is a lot of fun..
Regards