Hey, I'm going to be vacationing up in Danville with my family in a couple weeks. Cool.
Check out this resource from woodmizer - you can find local sawyers in your area.
https://woodmizer.com/us/Find-a-Local-Sawyer
The sawyers usually charge $70/hour plus a set up fee, and a charge for any blades for hitting metal. It's well worth your time and effort to hire one of them. Sometimes they charge by the board foot. Either way it's better than buying lumber, and better than doing it yourself with a chainsaw, or even with your own sawmill, since it takes a lot of time to learn how to mill properly. I've had mine for 6 months and still don't feel comfortable milling for others. And besides - you won't be able to get your own mill for a year at least. All companies have a HUGE backlog of orders right now.
You need to have your cut list ready - how many 2x4's, 2x8's, etc. and what lengths. He will then decide which logs are best for what, and will cut accordingly. Have a place to stack the wood once it's cut, and if you can get a LOT of stickers (usually 3/4" x 3/4" sticks) while you stack, that will save you time. I happen to have bought a large pallet of 1x8x10 boards, and they were all pretty bad, so I just run them through my tablesaw to make gobs of stickers.
Also, prepare your site however they tell you. They will want the logs stacked a certain way, in a certain area, etc. The more you help, the less you pay, so if you can get some GOOD HARDWORKING offloaders for him, then that will really help. Don't get some bum who doesn't like to work or it will only end up costing you more.
Most of what you have will need to dry for a year. Usually 1 year per inch, depending on the species. If you're going to be enclosing the walls with drywall or something, you don't want to trap moisture behind the walls, so they MUST be properly dried. If they won't be enclosed, then they can do a bit of drying in place, but you will have to allow for shrinkage. Most species shrink about 8% - 10% in width.
Don't dry it with a tarp. Stack it on a LEVEL area (use cinder blocks or something to get your bottom row of boards completely even), and stack on top of that with the stickers in between each layer of boards. Keep a space between the boards as well. Once you get the stack tall enough (whatever you like, really) put a final row of stickers and then a piece of cheap barn tin or something to shed the rainwater. Then put some weight on it - a dozen cinderblocks or so. That will help make sure the top rows are held in place while it dries. A tarp will only help keep the moisture inside, and you want good airflow through the stacks. Even if they get a bit wet in the rain, it's still in the process of drying from the inside, so an open stack (with tin on top) is still the best way to go.
You can call up a couple of the sawyers and get their advice on which species would be best for your project, how long they need to be cut down before milling, etc.