follow up - complete!
well we brought the enormous hot tub into my back patio, (through city
fence which i repaired. was 7.5 x 7.5 by about 4' high - a nice size
5-7 person spa. also had to rotate it 90, not only that but raining
steadily here in Denver all morning, but I didn't mind that, as the
park my place backs up to was empty and no cars around - made backing
in the trailer easier.
the electrical company, who i've used before, came saturday afternoon,
same day - and rain a new four wire connect straight from my breaker
box (see my above diagram), out to the patio. i have a disconnect box
next to the AC disconnect box. it's fully up to code, the disconnect
box is five feet from the tub, and the guy they sent has done spas
before, so he hardwired the line directly into the spa.
he did use my dryer breaker, so if i get an electric dryer i'll have to
get my breaker box expanded.
it was a few hundred bucks, but i don't mind as the used spa was a
great price and in great condition (seller getting a new one), and i
feel safe and the electrical is secure and won't damage the spa or
house wiring in the future
thanks for the above responses! it was heated up by Sunday, so made
the miserable task of moving it well worth it.