jeffandcarissa's Chocolate wedding

So after calling Tip Top Tailors today, i think for the guys we are planning to have them buy a plain white dress shirt, and plain black dress pants, Then have them rent a tux vest, and tie from the store from the collection chaps vintage in the pink. I figure this will be causal but still dressy. Is there any other brides doing this type of idea? Plus in the end they will get to keep the dress shirt and dress pants, and i think it will be a little cheaper... not much tho