Freestanding Tub on New Slab

[DIYPlumberGuy]

I'm getting a new basement slab poured and am going to install a freestanding tub in a new bathroom. If I wanted to go with a floor mounted filler what's my best option? I see Delta sells the following. Should I be looking at having something like that in place and plumbed over to the wall prior to pour?

https://www.deltafaucet.com/bathroom/product/R4700-FL.html

The other question is do they make something like this designed around 3/4" piping? Since GPM and not pressure is the name of the game with filling a tub, I'd like to go that route if possible.

Thanks.