I think I would call the company to see if that awning would stand up to the wind velocities while driving down the road. When rolled up, there still can be a terrific amount of wind trying to enter the ends of the awning and unroll it. Quite possible that their awnings are not designed for this kind of service or they probably would be in the RV market in addition to their home market.
I have used several Sunsetter remote control awnings on homes BUT they have a 2" square bar/mount that leaves a gap between the awning and the wall. Finding something strong enough to attach the brackets that hold the 2" bar will be a problem on a MH plus all the water off the roof will run down the side/slide as there is no way to seal this area. 33# sounds way to0 little for a 12' remote controlled awning. I would not worry about the wind on a motorized unit as there is no way it would unwrap. Nice enough product at a good price but not really suited for a MH which I have thought about doing several times.
Now if you had a BlueBird with the raised railings running down both sides, they would work really well.
This post is my opinion (free advice). It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.