Take a look here for more info on your contractor. If you want to know his history and ratings, as well as claims etc.
https://fortress.wa.gov/lni/bbip/As for Man door, you are correct in you verbage. In construction a man door is just that, a regular sized man operated ingress/egress door as opposed to rollup, fold up, etc.
I am sure you know to hold back funds on the job as you go, typically called retainage, not as common with homeowner house building, but holding back the remainder at the end of the job till all your issues are resolved works. He who holds the gold makes the rules... Create a "punch list" at the end of the job, this is basically a list of all the things you find that you do not find acceptable. Give this to the general to resolve, it is up to him to fix these problems.
Good luck, I am sure you will end up with a great house though. It's all part of the fun in building.