Thermostatic mixing valve w/diverter

[NS_partan]

Remodeling the mast bath and looking for a thermostatic mixing valve/diverter for a rain head, walk mount/wand and 3 body jets. I have 3/4 pex feeding the shower, so was assuming a 3/4 pex to the inlet, 1/2 copper outlets and would prefer a push button type design. The only item I have is the wall mount/wand combo that has a max flow of 2.5 gal so flexible on the rain head and body jets. Everything I found is either 1/2 inlet or 3/4 but low flow rates on the outlet and dont want to run into a situation where I can use atleast (2) items at the same time due to flow. Any suggestions? TIA