Ah, well, I see the point. I don't want to mess with the rules more than necessary. I appreciate all the suggestions, but I guess it would be best to keep them as is. I won't trouble again about the rule.
As for my move, I will play +Rx7lm, with the reminder that an unpromoted rook retreats along the diagonal rather than the two orthogonals, and thus you cannot capture my rook.
yipee another knight for me yay im so happy :/