can I transplant in early flower??!!??

So one of plants seems to be a monster. its far too large for the 5 gal pot its in.. I want to give it more room for roots for more fruits.
so can i transplant it? or will this be too much stress, its about 2.5weeks into flower but got much bigger then i was expecting.

OR...
should I cut more holes in the bottom of the pot and then place the whole thing on a coco/vermiculite mix in a drip pan so the roots have more room to grow?
I'll drill holes in the new container as well for drainage and put the whole set up in a new drip pan

thoughts on this? I just dont want my yield to have met its limitation cause my so called "partner" is a lazy ass and didn't want to spend money on anything when Ive dumped 500 bucks into it 'our' room and do all the work myself.

your plant wont get much bigger after 2 weeks into flower the 5 gal should be fine, how long did you veg for?

Have you even tried laying it on it's side and gently sliding the whole thing out to see how the roots look yet?
I think ROFL is right, when mine were a few weeks into flower, I moved one from a 2 gal. to a 5 gal., and she has hardly used the extra space.

BTW. Sounds like you got an 80/20 split coming up with your 'partner'

Transplant your partner..