So here goes...
Remodeling basement. I have ripped out old nasty drywall from the celing. Used 10 gallons and a power sprayer to paint the celing joists and walls. Thought I was done. Notsomuch...wife wants to rip out carpet

. Ok Ok so I goes to rip it out now people, and low and behold there is effing black mastic all over my entire 900sqfeets. Bummer. Lots of research later and I still have questions. Here is my plan and then I will pose questions and concerns.
i. Tape off bottoms of walls and floorboards
1. 5 gallons of Bean-e-doo($129.95) to remove mastic.
2. 1 gallon Emerge degreaser($19.95) to remove residue.
3. Acid etch (Muriatic acid?) ($?)
4. Powerwash (Or hopefully mops alotsa times?)
5. Test for concrete moisture

6. This is a lot of steps
7. Paint with roughly 4 gallons of Rust-Oleum Epoxy Shield (~$200)
8. Have a kick-ass basement floor.
If any of this sounds wrong or crazy please let me know. Here are some of my concerns.
A. Mastic won't come up as easy as it does in Franmar's youtube videos.
B. Powerwashing in my basement doesn't sound like a good idea. I'm worried about soaking the drywall. Think I could mop a bunch and use some bases to clean up after acid etching? Or should I skip the acid etch alltogether?
C. If I get done with all this backbreaking work just to find out I have moisture problems, then I will have to stop by my local bar, and tell the bartender to come down here, and get me one bourbon one scotch and one beer. What options would I be left with if I have moisture coming up through the concrete?
Thanks in advance for any help. I been standing on a corner leaning up aganist a post thinking about this.