The only issue with rear trigger first: That's typically the barrel with the tight choke. That can work OK in driven shooting, where the birds are coming at you. But it's bass ackwards in rough shooting, where the first shot is typically the closer one and you want the more open choke.

Gloves: I've had pretty decent luck with thin wool inserts inside unlined leather gloves. But you have to find the right combination of the two.