theres 2 different types of exhaust hose, one has a metal rod that spirals inside of it, im guessing it helps with possible collapsing or sagging in long runs. but its almost impossible to bend. the other is just regular ol exhaust hose. i dunno how long the run will be for you or if it will bend that far.
if you want to go this weekend id leave this project for when you have some downtime. gives you time to make sure your silicone fully cures, that u got all your SS bolts nuts, washers, etc. go have fun boating this weekend.