Well, I applaud you honesty. I have actually considered this system myself because I want it to be portable. BUT as stated above other options are more economical but not easy on the eyes. Quick Jack does allow their lifts to go higher but it is with added cost and parts. Not a fan of that.
Now, Just by the way that the post is written. With 5 bays being all pretty like..... is this a "Sugar Momma" situation? I am asking this because if it is, you probably could get away with it with a little extra effort.