Do you think the tubes included with the ones I am getting will be fine ? What do you think of it at first glance, and in the description, electrically?
I live in the Atlanta suburbs and my office is pretty close to the Audio Exchange location. I have used them multiple times for service on McIntosh and Dynaco gear, plus some speaker refoaming and also bought my McIntosh MX-117 there. I have been very satisfied with my experiences. Haven't had anything shipped so can't speak to that from personal experience but I would expect a quality packing job as well.
Hope everything arrives safely, and enjoy the new amps
Oh, and I'd probably hook that existing PAS up and take my time preamp shopping. Plus, by using the same preamp you'll be better able to compare the new Mc Amps to that ST-70.