Couple of problems with your request ...........
I've as yet to find an SA you can rackmount under 8000 bucks
The vast majority of SA's are benchtop, and VERY expensive.
I found one cheap(ish) one which I bought and have had for years, AudioControl Industrial's SA3051. Most likely the best-for-the-purpose and buck
I didn't say I like it and I would not buy/use it but it has a SA and it can be rackmounted and it is cheap.
What you really need is a
DK-Audio MSD-200
This is very good tool with SA and goniometer and everything else you might want. Unfortunately it's very expensive and it can't be rackmounted either.