I have one different observation. If you are a boxer with good stand up I think your best bet is to try and stay standing with a bigger opponent. My logic is this, it is easier to K.O. a big opponent than to squirm out from under him. As a boxer your head movement, defense, and cardio are your best weapons. Make him chase you, make him punch make him tired, then try to turn his face into hamburger. Not saying you should ignore your bjj, if he is any good he can and will get you on the ground but I think you would be best to try and get back standing instead of trying for a submission. But if an armbar is there by all means take it and go home with it. But in the words of my lead trainer and cornerman, "You got good hands, trust them."
Boo! fight with Honor!