Thank you for the advice, but I've definitely had jobs that went sideways leaving me waiting for the UPS guy to deliver that one last thing. I work from home primarily, and the few days a month that I do head in to the office I can commute with my wife, so if I experience mission creep it'll be ok. Still would like to pay someone else if I can find a decent deal. Decisions, decisions.Just a little personal experience based advice here: If you tackle it yourself and you're planning on being thorough, I think you should count on longer than a weekend. You could do it in a weekend if all goes well, but you're probably going to break something or discover a worn out part that needs replacement and have to sit and wait.
I broke the water neck because the previous mechanic used a sealant that glued the male neck into the female outlet. I spent hours on it before breaking out the pry bar. I got some movement (fractions of a mm) but then the pry bar was too much and the neck fractured. I had to chisel the neck out. I also discovered a few bad bearings along the way (fan bracket and one other) and noticed my radiator had some cracking.
Unless you're ordering ~$1500 in OEM parts ahead of time, it's real easy to run into a few needed parts you didn't think to have on hand and that will cause you a delay until at least the next business day.