me and my g/f moved my 180 gal glass tank, which is 8' long, off of a uhaul and with a dolly....needless to say that i did all the work while she just pretty much helped me guide the dolly...like everybody else said, just depends how strong you are.....
Just do it....I moved my 125 gallon all glass by myself and I am only 6'3" 300lbs...