you want it all ?
well this is harder than it looks
1- a fully muffled large tuned pipe gives most power with least noise---it also takes up most space and costs the most
further - you need to match the rpm band used with a prop which is most effective in that band
2- about the most load that engine will work with is a 23x8-- it will turn bigger props but as a good 3D setup you likely will find it is not responsive or heats or is slow revving etc..
the easiest setup is a NON tuned can -just a big open quiet can that is totally numb to prop rpm
A large MTW with a super short header may befine
The JMB is my favorite for this setup -it is quiet and no power losses
try paddle bladed 22x8 props - use plenty of oil 30-1 to allow for heat if all you like to do is hover - and baffle the engine (make good air flow thu the fins and out the cowl) to make certain it stays cool.
The wide open stock DA "muffler" may suit you best if the noise does not concern you.
Personally -I like the quiet setups - the quieter the better .