Your best bet for a reusable coverall are military flight suits. They have multiple zippered pockets, velcro staps on the sleeves, zippered flared foot openings and they are made of light weight, durable and fire resistant nomex material.
Look for them on ebay you should be able to find some used ones in your size for a reasonable price. I recommend getting either the large size or a size or two bigger as it makes it easier to take off and allows more air circulation.
I have 5 or 6 pairs I bought in a lot and when they get dirty I just stop at the laundry mat and wash and dry them all at once. The nomex drys super fast