I have pics of P-39Qs used in the Gilberts in 1943, so I'd guess it saw a something over a years' worth of service in the Pacific, possibly up to two. But even so, a fighter that saw combat in multiple theaters for more than a year is a fairly significant piece of work. The P-39Qs top speed is 386 mph at 9,500 ft, which is not a complete embarrassment. With 4x50s and a 37mm cannon -- it might be an interesting addition to AH.
The Finns loved the Brewster, and in their hands it produced more aces per airframe than the P-51 Mustang did in ours. How, I have no idea. Well, some idea -- must've had a lot to do with the relative training and tactics used by the Finns vs the Soviets and the statistcally small number of Brewsters actually used.
The Brewster would have a number of skinning choices, for sure. Same goes for the P-39...but, s'all good.