U could go either way , what's cheaper , I assume the prop change would be . You should give brett @ bblades a call , he might suggest reworkin those 35s like takin a little diameter off . #6 drives seems like alot of overkill for that setup

Economically speaking, a prop rework would be the cheapest. A different set of down pitched props would be a more expensive option. If you look at going with gears a prop change is most likely going to have to happen also...which would add to cost even more. You might want to talk to Zastrow and see if he will let you test his props for a fee. Or get BBlades involved to test some wheels.

If you have a smart phone download the propeller calculator...fun to play with and it may help you.