Although there are no golden rules as to whats best and whats not.... Generally speaking the twin hours would be an advantage at some stage if you can afford them. 2 mates of mine did their cpl in a twin and they ended up getting on a twin quicker than others finishing at the same time. Did not help them get the first job quicker however. It will make stepping back onto a single for that first job easier. If you choose the twin for your cpl training you may want to get in a few 210 hours b4 you step onto the twin. It will get the brain used to the faster speeds and more complex systems that you will use in the twin. 210 time may also help with that first job down the track.
Have Fun G.G.