briefly back to the ramps versus pit thing, have you considered something like these?
Restoration Car Ramps, UK
i priced up building some of my own with a few subtle differences and improvements, and in fairness, with the price of steel now, i couldn't save that much over their fully built price, so not bad value i think.
i considered adding some more strength and a beam type jack to them so that you can get at least one axle end free from the deck, which would be nice, and not too difficult to build either.
i also thought about adapting the display ramps you see on forecourts, you know the type where you see a discovery pretending to actually climb a hill!
like these http://www.ebay.co.uk/itm/Car-Displa...item43ac7d67a8
they come up for sale on ebay every now and then, normally make about £200, which isn't bad for the weight of metal in them to be honest.
you could do what i've eventually done, and that was to build a trailer that doubles as a work station.
its not that high, it still has to work well as a transport trailer, but i can drop the engine out through the frame with relative ease i reckon, and its perfect for wheel/brake/suspension height jobs.
it now has a full electric winch for dead cars, and then i added these bad boy 8ft ramps to latch onto the back, or fit the feet back on and have some 2+ft lift ramps to work off.
its still on your back a bit but the height helps no end,
i have no trouble getting the job done on my back!!!!
i filled a pit in and built my workshop over, you can come and get it if you like mate?