I havnt been checking out the forums for a while, i had the good fortune of getting hitched and buying a house

I was down @ Garden world on the weekend and never realised they have a bit of a cheap corner when it comes to bonsais. a few that are a little lacking, broken limbs etc. Picked up a reasonably developed chinese elm for 20$. Since its my first Elm tho, i've done some research and found blogs on people saying they like the humidity, warmer weather also, could do with a misting etc. Are they harder to care for than any other Bonsai?
Mainly however, there is a lower branch on it, quiet thick (relative to the rest of tree), that has been broken in half, probhably the reason for its cheapness. I think i would have taken it off anyway given its so low, but im just curious for some advice, should i be cutting it off now, or letting it repair a little bit, its already started to get little shoots off it, the wire on it at the moment is digging into the bark already and has obvoiusly been on too log, so has to come off either way, i just dont know what to do with it.
Also any tips on design would be nice too

Could be the Front ? the other front? Broken Lower branch (The one with the Large wire around it):