You have a lot going on here. First off, congrats on the wedding!
Second, Zara doesn't make quality suits. If you have some additional $$, I'd suggest getting an MTM suit, since it is, after all, your wedding! If you're in the NYC area there are some great options including vendors here on StyleForum like Andrew Lock, etc. PM for recommendations if you'd like.
Third, if you are committed to the Zara suit, definitely opt for a different color tie. Don't have the tie color match your suit color. If your theme is spring colors, go with that instead!
Thank you. I'm on the opposite side of the country from NYC, so those options won't work for me unfortunately. Also, I would get a MTM suit, but the wedding was planned quickly and everywhere I called is booked. Looks like I'm going to have to do the best with what I got.