I have a 700 gram bumble bee male (08) and a 3500 gram normal female I would like to pair up this winter. I am hoping my male will be closer to 800 grams by winter. Is this ok to breed them together?

She looks so massive compared to him......like she will just crush him. All my other girls will be around 1500-2100 grams, so I know he should be fine with them. Thanks for any advice and/or experiences.