How many times are they going to block and prime? If this is the first coat of primer after body work, I personally would do 2 more rounds of blocking/priming before paint. Then after paint they will need to color sand.
I hate to be the bearer of bad news, but I see way more than 80 hours in this. I'd say it would take at least 2-3 days to block. Likely another day to mask and prime. Repeat this process two more times. The second and third block usually go quicker than the first. Next, it will need to be surgically cleaned and masked again for paint. That will likely take another full day. Then another day for paint, and a week or so of color sanding and buffing. This doesn't account for the sound deadening you want done. I'm betting you will have $5K in materials.
I'm genuinely curious what a paint job from a shop costs. I've always done my own and I recently did a full body work/paint from bare metal on a Porsche 911. I charged a fraction of what that shop rate is!