Hi DSB,
With all you have to consider, your best bet is the SW880 10 inch SOLID tube dobsonian, from York Optical, order it online (and get the 20% discount for IIS members at that price bracket)
Cost? $799 - 20% = $639.20
Portable enough, large enough aperture, quality scope, unbeatable price at the moment.
As I mentioned to you in a PM, I would have no problem lugging the 12" SW980 around as I am over 6 foot 8, but for you, the SW880 is the best bet.
Now, stop dilly dallying around and go and buy it already! At this rate I will have my 12" before you!
Cheers
Chris