I'm always looking for ways to get things done while spending less.
If you're looking to set up a second system, want tubes, and want to do some soldering I'd suggest finding a Magnavox (or similar) console pull and rebuilding it. You'll end up with something that sounds good at a fraction of the cost of the kits.
On the other hand, your Scott really is perfect for this so if you don't really plan on having two systems - which would require you to buy more speakers unless you have some already - I'd suggest that you find a cheap stop-gap solution and focus on getting the Scott up and running again. You are apparently in the process of doing just that.
Your speakers are quite efficient and don't really need much power. Something like this costs almost nothing, sounds surprisingly good, and would fulfill your need for music until the Scott is functioning again.
https://www.parts-express.com/dayto...attery-powered-mini-amplifier-15-wpc--300-380
I use one as part of my home office computer system. I also have a Fisher SA-16 PP 6BQ5 connected so I can choose between them. No need to spend hundreds of dollars when you already have a tube amp that is perfect for the job.