portable lifts

I also have in floor heat which is a deterent for drilling. But a 4 post doesn't require this. I have looked at these links posted here and I like this one. It is a combo unit and includes the sliding jacks and drip trays. It is 110 volt and a lot of the 2 posts are 220. It will ba a while before I can get one, but the only thing I would want to do to customize it, "cuz stok sux!", is see if I could fabricate up a set of wheels so I could just roll it into place and out of the way whenever required.
http://www.gregsmithequipment.com/Atlas-Garage-Pro-8-000-EXT-Two-Atlas-RJ-35s