If you decide to get eggs, check out James Marie Farm (in Louisiana, I think). They are well known for breeding for size (both eggs and birds). It's always worth it, IMO, to get the best stock possible because the costs of housing and feed will far exceed the price of acquiring stock. I also think quail eggs ship better than larger eggs, at least I've had good success with shipped eggs.
Having James Marie Jumbo's should let you sell breeding stock or eggs at a premium price, as well as just making wing's operations more efficient.
I love quail, they just aren't as practical as chickens and harder to winter over. My experience with coturnix was before I used heated waterers and I lost a lot (about 50%) every winter because once a day liquid water was just not enough for the weaker ones. Coturnix are heavy drinkers (and poopers as a consequence). I've though about getting one of the pretty bob white varieties as pets, but they are generally more skittish and I know any I release would never make it around here, this is a predator-heavy area and wild bobs just don't make it through the winter. I've never even heard a bob call in our area, so I assume they are all gone from here.
Oh well, I have enough "pet" birds that don't really pay their way.