Potted Roses

[genie123]

Back in May I was given a potted rose which bloomed very well and also had a second blooming. No more flowers now but its very healthy looking with lots of new leaves. On close inspection I realise this is 4 little plants. I was thinking to repot as its probably getting quite busy in its originl pot. First, is it the right time to do this. Second should I break up the four little plants or just repot as it is? It looks so healthy, I would hate to do the wrong thing.

[Chipchopper]

Possibly some root stocks emerging, which is not really desirable.
The leaves above the graft point are normally five leaved, where the leaves on the (undesirable) root stocks usually have seven leaves.
If this is the case, prune out the latter.