The 760LMT is a nice unit (I have had one for 1 1/2yrs) although it can become confused from time to time. But I do like the large screen.
Unfortunately, the large screen size means there are really no good options when mounting it, especially in a Class C.
In an uncharacteristic move, I bought a RAM mounting arm and full-frame enclosure (which includes a sun shade) and ball-mounted it to the forward console. I typically like the more built-in custom look, but there is just not sufficient dash space to do so.
Oh, and a tip. If you want a matching switch, the ones next to the one you installed are Contura III by Carling Technologies. They have several handles to chose from, one that will match your switches.
Personally, I see nothing wrong with your switch, and it looks nice... just saying if you want a matching switch (for that or other positions), the matching switches are made by Carling.
The only thing that works on a RV is the owner...