Nice plan Nate. Loop running and operations. 
I'm sure it's going to change a hundred times before you build it. Sounds like you already have a plan in mind for the space. Just make sure you leave adequate access to service boilers, furnaces, water heaters, etc. The electric service panel requires 3' clear access in front. I prefer having a ceiling above, not exposed beams, but it's your house so.....
A few comments on Asbestos floor tile (ACT).
Yes- it contains asbestos, but the manufacturing process bonded the fibers and it is not readily friable when broken. It can be removed carefully and disposed of. In New York State- any amount over 100 sq ft is considered a large removal and must be done under containment with proper filtration and air monitoring (at least in a commercial setting). Also, the adhesive can contain asbestos and may need to be chemically removed.
The alternative is if it is solidly stuck to the floor, you can encapsulate it with a proper floor prep product. Even if you have a few loose pieces, you can remove them and patch over the spot. I've gone over a few small areas in my basement and used Henry skim coat to level the floor. New tile or carpet can go over it and you have a brand new floor. I put down peel and stick tile and it is solid.
Good luck- Bob
