That is probably the
bare minimum. I have a 2 ton Torin trolley jack that I hate because the handle is short (so less leverage) and the cylinder is small so it takes a fair amount of pumps to get the car up.
I'd go with a 3 ton jack for one that's not a PITA to use.
Not on their website, but here's the one I got last summer for $149 on sale (normally $199):
http://www.lowes.com/pd_89476-33680-...ductId=1111715
It was a good deal. Still an imported jack but seems to do OK. It is NOT a low profile like you want, but I skipped on that because the jack height is not an issue with my T/A, it's the fact that the handle can't pump with the jack under the car.