(1)The wheels are 32h, I've heard that 36h or even 40h would be more likely to stay true given my weight (i.e., touring type wheels). Is 32h sufficient considering my weight? If it just means being a little more consistent in checking and adjusting the wheels that's not a big deal, but if it means component failure then please let me know.
Probably not. I rode my sequoia with 32h alex rims, and they didn't hold up(spoke failure at 600miles). I had to swap them for 36h velocity deep Vs.
(2)The tires are Hutchinson Flash, 700 x 28C - are these big enough for me?
Probably fine. I ride 700X25s, and they are fine. Just keep them properly inflated.
(3)I've been assuming that the chromoly frame is not going to have a problem dealing with my weight, seems correct based on my searching of posts on here, but does anyone think that the frame itself is not going to be up to the task?
The frame should not be a problem at all. If you are going to spend money, do it on the wheels.