I am running Prodrive 17X7.5 GC07C (I think they are +53) with 225/45/17.
The drive axles are shorter for the wagon, however IMO they will be fine with the wider track, the CV's have a lot of lateral movement. I was running the sedan drive axles before I switched to the sedan suspension. Sedan drive axles should be easy to come by if nesc.
The trailing arm part number is the same for the sedan and wagon. (according to Rallispec)
The car is being aligned as I write this, I will report any issues.
I will post some pictures shortly.