I want to do some light sparring with my close friends every week to help each other out. My friend and he's younger brother are 6'1/220 and 5.10/265. I'm 5'11 and somewhere between 190-200. We will go at 50% power, but I know they punch hard when they want to lol and so do I.We will use full face guards and 16 oz gloves and chest protectors. I'll be outweighed by 75 pounds or so! What to expect? Useful sparring?