I installed the combo unit in both units, the Miramar 34.2 and the current 33.5. Hardest part was getting in the door. I had to remove the screen door and the door handle just inside the door. Also had to remove the cabinet doors.
As a suggestion I would run up to your local hardware store and get a painters cloth to lundown on your floors. If you are not careful, you will gouge your floor when you set it down. I put a small nick in the floor on the first install. Second time around, inlayed down the painters cloth and it left no marks. It will be a two person lift into the coach, but I was able to get it into the closet on my own. Make sure to remove the door catch on the bottom.
We love it, small loads works great, typically run it every other day if camping for more than 4 days. Also I found that since there is no dryer vent it uses warm/hot water in the drying process, so any lint will be discharged in the water when it drains. This stuff will glob to the side of your gray tank while dry camping.
If you can leave your gray valve open then it's not an issue. This summer I will use a heavy duty sensor cleaner as soon as we are done with our summer dry camp and see if I can head off that problem this year.