In my master bathroom I got a Hansgrohe Rainshower, hand shower set from Costco

It is in a traditional standard sized shower tub combo. I love the rain shower, hand shower combo, love the way this rain shower feels and that I can change intensity on both the rain shower (2 settings) and hand shower (3 settings)

My guest bath is the larger bathroom and I am putting in a large alcove tub

(36" wide, 72" long, 21" deep).

It will be placed with the left and back against the wall with a similar 1/2 wall ledge on the right.

I would like to do a ceiling mount rain shower instead of the wall mount and have it closer to the center of the tub and I would like a larger head.

There isn't a local hansgrohe dealer with any hansgrohe products on display,

I found one that I think may work, but would like to know if anyone has experience with hansgrohe and can describe the difference in the settings, if the larger one works as well as the smaller one, if the 2.5 gpm vs 2.0 allows enough additional water to handle the larger number of jets. . .

Here are the specs for both what I am considering and what I own.