Ultimately it's your decision of course, I just wanted to make you aware that if you leave them together but don't notice she has given birth until after she has done so - she will get pregnant again straight away. Eve at Briar Patch rescue recently had this happen (someone brought a family with a day old litter in to her - and four weeks later she had another litter - leaving 11 buns to rehome!) so apart from the strain on the mother it's a lot to be aware of. Even if you rehome them responsibly yourself - those homes you find for the babies are taking up homes which those owners could give to rescue rabbits which already exist, instead 
If you are going to keep them together in the long term after she is spayed, you will need to get the male neutered anyway. If you do a search on here, the topic has been discussed before - unneutered males are very...erm...'randy' and will harass a female to the point of her getting aggressive and possibly biting his 'bits', so it really is extremely unlikely to work out in the long term
Like I say, at the end of the day it's up to you of course, I just wouldn't want you to not realise quite what you could be letting yourself in for!
If you are going to keep them together in the long term after she is spayed, you will need to get the male neutered anyway. If you do a search on here, the topic has been discussed before - unneutered males are very...erm...'randy' and will harass a female to the point of her getting aggressive and possibly biting his 'bits', so it really is extremely unlikely to work out in the long term
Like I say, at the end of the day it's up to you of course, I just wouldn't want you to not realise quite what you could be letting yourself in for!
