Well seeing as everyone else is being all keen and ultra-supportive, I thought I'd be a misery guts and try and argue the other side of the case.
Firstly, pushing your budget to the absolute limit on ANY used car purchase opens the road to potential heartache if something goes "bang" inside. It's arguable that pushing your budget to the limit on a used Maserati is the road to
guaranteed heartache! You should always be leaving yourself at least a couple thousand $'s breathing space on your budget IMO, for peace of mind if nothing else.
Secondly, I'm guessing that insurance, running costs and servicing and maintenance will be pretty jaw-slackeningly expensive. I imagine that just general routine servicing costs at a Maserati dealer will be WAAAAY more than you would expect for your average car, and being an Italian thoroughbread the servicing intervals are likely to be more regular than any 'normal' car. Maserati's aren't exactly reknowned for reliability, and if/when something does go wrong the cost of repairs will most likely be fairly eye-watering. Best bet would be to check a US based Maserati forum and find out what the average servicing and maintenance costs are.
Thirdly, although the Maserati Coupe (or any Maserati for that matter) is certainly a 'cool' car, and good looking, from what I've read it isn't actually
that good. With the earlier models like the one you're looking at the 'Skyhook' damping system left a lot to be desired in terms of body control. Fairly smooth riding, but tons of body roll and pretty unpredictable/scary when driven near the limit. Also the early Cambiocorsa gear shifts were notoriously hopeless, something they didn't really fix until the Quattroporte and Gransport models a few years later. It does have a sensational engine by all accounts, and is pretty darned quick in a straight line, but I wonder if it's actually any more fun in the twisties than your Mini?
With my 'voice of reason' hat on I'd wonder if maybe something like a BMW M3 Coupe isn't a more sensible option. You could probably get a decent example for a few grand less than the Maser, it'll be more reliable, and is without doubt a MUCH 'better' car. Might not have the 'coolness' or beauty of the Maser but it'll be a damn sight more fun to drive, and even more practical I imagine.
Or if you're determined to blow your hard-earned on something exotic and eye-catching, I'm sure you could find an early-ish Porsche 996 Carrera 2 for something around your budget. Not exactly cheap, but certainly cheaper to run and maintain than a Maserati, and also a much 'better' all round car from behind the wheel, which is where it really counts.