What ratio/HP Cascadia would work best if HQed in MD area?

Hi all! We are getting our own authority in Maryland (Annapolis area) and trying to decide on the final specs for a truck we are looking to buy.

We are looking for a 2016 or newer Freightliner Cascadia with a DD15 engine and DT12 transmission.

Edit:
"Also, we'll be hauling a dry van not exceeding 45k pounds and trying to stay well under that when possible."

The question is, how much HP and which ratio is needed/best?

Granted, this depends on a lot of factors, but considering we'll be driving out of MD W/SW/NW, which is kinda mountainous, a higher ratio (~3.2-3.5) would work well with a 455 HP engine. We expect to eventually take shorter lanes but that is somewhat unpredictable.

Really appreciate any and all feedback! Also, maybe any recommendation on dealers in the area? To be on the safer side, we are buying a truck with a warranty (Frightliner seems to have a fairly comprehensive 12/100 warranty).

 

Welp, this was supposed to go under Ask An Owner Operator. ¯\_(ツ)_/¯

 

Just a dry van not exceeding 45k pounds and trying to stay well under that when possible.

Doesn't that come at a cost of higher fuel usage and potentially maintenance?

 

Yes, I've seen many articles/posts that are generalized, but I'm wondering if anyone here drives around PA/MD/Upstate NY/VA/OH area and what kind off HP/ratio they find most suitable.

Yeah, that's the impression I am getting from a lot of fellow drivers - more HP does not equal more fuel consumption, generally. I guess the axle ratio has a much greater effect (both on RPMs and general fuel consumption) and wondering what may be the sweet spot for a Cascadia out on the NE-ish area.