Does Wheeler-Dealer level up mid-use? If we, say, had 80 Silver boxes and couldn't turn Golds into Platinums, but rolling up 50 Silver boxes would be enough to make it level up, would we be stuck at opening 20 Gold boxes, as befitting our level when we started, or would we get to open 5 Platinum boxes, as befitting our level when we finished?
It normally wouldn't matter much since boxes tend to come in bit by bit, but we have a relevant use case of a good doggo who's earned quite a stockpile so it seems relevant.