As long as they are already living together now, they should continue to get along in their new home. However you must make sure they ARE actually girls. Pets at home in particular are pretty bad at sexing, and their T&C's of sale (on the receipt you have to sign) state that the sex isn't guaranteed and they can't be held liable for any mistakes. This is complete twaddle though, as they once sold us a boy rabbit after we specifically requested a girl. We explained that we already had a girl, and didn't want any babies! Three different staff members including one supposed 'rabbit expert', all confirmed it to be a girl, but a couple of weeks later it started humping our poor rabbit until she didn't know which way was up! We took it back and the manager just said oops yes, it is a boy, but we don't guarantee the sex so tough luck. Eventually I made such a fuss to their HO that they agreed to pay for both rabbits to be neutured (cost them over £120 in the end).
With regards to hutch size - please make sure it is big enough. GPs need much more space than people realise, and if they're cramped they definitely will fight. It is recommended that three GPs have a hutch of at least 13 sq feet (therefore even one of the big 5x2 foot hutches would be too 3 sq feet too small) plus a secure exercise area on top of that. One of the double-decker hutches might be a good idea if floor space is limited, although they don't like steep ramps.
Also, I presume when you say 'hutch' that means you're planning to keep them outside rather than inside? If so, you will need to wait until summer to get them. Young GPs living in a shop can't be put outside at this time of year as they are not used to the cold, as need to develop their thicker coats before they face their first winter. So they'll either have to be kept indoors until the weather is milder, or you'll have to put off getting them for a few months. If you're planning to keep them indoors anyway, just ignore me