If you really have to match with her outfit, then I agree that a peach pocket square would be a good option. In my opinion you should avoid the peach shirt though.
Personally I never tried Indochino, I know they are very succesful but what I can say is that I'm quite satisfied with De la Vega Tailors.
This jacket is my second garment from them. I made a few minor adjustments from the last suit...
I agree with TimelesStyle, try a knitted tie, and yes, jeans and shoes are your main problems right now, try a pair of jeans that fit you well, and a pair of brown oxfords.
I got my suit. In overall I'm very happy. After confirming my measurements with the test suit, the final suit fits good.They also sent me a free shirt which is quite decent and fits well, but I agree that their suits are much...