Hey chewie70....late post, but I've 'been away'/out of town/preoccupied...
For eq and room correction, I run a dedicated/in line Behringer 8024 (yeah, PA stuff...but it works nicely and is reasonably 'clean') and the APO eq off Source Forge with the Peace interface on the 'puter...
https://sourceforge.net/p/equalizerapo/wiki/Documentation/One for room eq, the other for 'tweaks 'n tricks'; monitor the results with an RTA and see what's going on...
Between the 2, I could probably bend an acoustic 2x4, but that's more for grins than accuracy. *L* I'm not so much a 'purist' of late, but having 'been there/done that/smoked the t-shirt. ;)
I just amuse myself of late...my approach to the 'hobby' isn't as 'serious' as some, but to each...*S*
Hoping to be helpful, J