This is a lot of work and I don't know if it's a good idea. Outside of Allan, the DIY'ers I've seen doing this have a number of people helping them out and they usually have smaller boats. On a 34', I was all jazzed up to compound and wax my hull while the yard did the bottom. I could barely finish the starboard side and the stern. I had to use a ladder versus the rolling scaffold (which would have made life a lot easier.) The yard finished the bottom in about 5 days. I was on the hard for about 25 days while the yard did some other work. My neighbor in the yard was doing his bottom with some major fixes, all on his own. He would come after work and the two of us were there with our lights slaving away-what a sight. This was over a Svendsens last March. I don't know how Allan did all of his work in 3 days.
In sum, if you have the time, can cope with the weather, have someone to help you, and have a truck/suv to bring your tools with you, than maybe consider it. On a side note, personally, I don't want to touch the bottom or any thru-hulls. I buy piece of mind and insurance through the yard's work.