
Welcome to TRT!
The wavemaker question depends on what you are thinking about doing with the system. A closed loop would probably serve you extremely well, especially since you are building this yourself. Then you could use an OM Squirt switching device.
If you are talking about putting powerheads in the tank, then it is going to depend on what type of powerheads you want to get as some will not even work on a wavemaker, while others like Vortech, Tunze, and SEIO will only work on their own brand of wavemaker.
Good luck with the build!