legacy604

I have a 2007 Legacy GT and has about 1.5" drop all around. I found a set of rim at 17x8" with +42 offset. Is that going to fit without rolling fender or suspension work? Is it going to rub if I go with 225/45/17 tires? If anyone has this set up before or any recommendation on tire size, please let me know. I just want to confirm before I jump on it. I've read the Xenonk guide and it mentioned that lowest I can go is +43 offset.

I have a Spec B with the stock USDM Bilstein shocks. Will the drop be the same if I go with Eibach springs? I've done a search but didn't seem to find anyone with this set up. I see that Rallitek advertised that their springs has less drop on the spec B compare to the GT? Is this also true with Eibach prokit? Does anyone know why there is a differece?