Hey Miatatude, welcome to the party
Glad to have another Miata auto-x'er here on the forum
But actually, our situations are actually reversed. I was the first to race, and then my g/f picked it up from going to autocrosses with me. We sometimes co-drive my Miata, or she takes hers out when we don't have to travel very far to get to an event.
I think these guys have quite a lot of good advice for setting up the suspension for the mx-6. I would love to add in some input, but honestly my knowledge is really limited to the FIRST gen mx-6 and Miata
I'm curious what setup you're running with your miata. I compete in a local sanctioned autox group, but don't do SCCA yet. I've thought about it, but I'm actually quite happy with the group I'm with now ( FAST ), as everyone knows each other (kinda like Cheers), and it's a very friendly group overall (we brought my pitt-bull out to the last event, and he climbed into someones BMW Z-3 M-model and the guy just shrugged his shoulders...).
I think before you get into doing any major mods, you should have the hubby learn how to drive the mx-6 first. Take it out stock, see what it can do, what it can't do, and learn how to drive FRONT WHEEL DRIVE!!!
Because you can't do this in a FWD car:
http://sarasotamiatas.com//Gymkhana107/DSC_7572.JPG *not linked because of it's excessively large size... *
Good luck and have fun
-meaty