Monty, I’d seriously rethink the radial arm saw idea. I’ve owned several over the years and have found them to be less than desirable for accuracy. You are spot on with dialing in your tablesaw for crosscuts. While you certainly need a good blade on your miter saw, a well tuned tablesaw is often the best way to make accurate repeatable cuts. Miter saws are generally not the best choice for crosscuts.

Artisan Woodworks of Texas- www.awwtx.com