Check WT wiki before suggesting, they pretty much copy vehicles from that game to Enlisted. MGs are 7.92, and there are no wing bomb racks.
Still, with APCR belt for the 30mm MK103 (61mm pen at 500m, but losing a lot of penetration at an angle), lead indicator set for 20mm cannons the plane would be good enough for BR 3, since it flies noticeably better than B-3, has anti-air capabilities, and only has trouble destroying KV-1, unless you are patient enough to climb and attack the roof almost vertically.