Hi Ben, congrats on the new scope!
I can't see any problems with lifting it by the tension handles: I am sure the manufacturer was expecting people to do that!
With other dobs the OTA simply lifts off and you move them in two parts: base + OTA. If you are having problems you could unscrew the tension handles and move it in two parts as well, but it may be a pain trying to screw them back on again once you are outside.
Another alternative is to use a trolley or sack truck (with maybe a bit of padding and an octopus strap to secure it without damage). This may be better if your back is like mine!
All the best,
Dean