I ended up downgrading my requirements as the locally available 120 gallon aquariums were all premium with a premium price tag or had to be ordered and shipping on a basic aquarium pushed the price into the premium category.
So my first tank will be a 40 gallon breeder from Petco with a 29G sump.
A 40b is a nice tank, I think ashburn2k’s tank is the same footprint and is already drilled; price is more than right.
Petco is having the $1.00/gallon sale and the 29g you have in mind would make for a very nice sump.
Also at Petco, you may find a steel stand from their Imagitarium line; although are very basic, you can “skin” the steel frame with plywood and stain it to your liking.