Camper level, or nose-up OK, when draining the water system for the winter?

Really, the title I think says it all.  We're going to be winterizing today (T@B 400 Boondock,) as this is only our second time winterizing, I realize it's probably a silly question.  But our driveway has a fairly decent slope, as in, to get the camper level when setting up for a trip, the tongue jack has to be cranked almost ALL the way up, the tongue nearly reaches the ground!

So, lazy me would like to be able to just leave it hitched up to the tow vehicle, open the low point drains and let it drain, open the yellow flapper valves under the bed, then close it up and suck in the antifreeze until the faucets and toilet and shower all run pink.  I might also hook up our compressor to blow out the lines (20-25psi so I don't blow out a line) but as I said, I'm kind of feeling lazy, so the compressor may stay put.