Not familiar with your model enclosure but here is some general advice FWIW.
I usually wait for a good day. You want the sun to work the material and make it easier to work with. I start with the pieces in the front over the windshield first, fully zip, snap in place and Velcro down. I install the two side pieces with the smile rollup sections again zipping, snapping into place and Velcro down. I then install the three aft pieces. I work the first aft side pieces all the way over into position and then slide it further out beyond the frame (the piece hangs a bit to the starboard side to give me more room to work with when installing the middle piece. I install the second aft side piece in the rail next. I install the middle aft piece working it toward the first aft side pieces sliding it over as far as I can. Then install and slide the other side (hanging a bit outside the frame) of the middle toward the second aft side piece. Don't zip the aft pieces yet. The last two pieces that I put in are the corner pieces. These have the smallest area that sits in the slide tubes. Once installed, zip to the two side pieces (smile rollups) and then the aft side pieces. At this point the last one to zip is the middle to the two aft side pieces. Once you do it a couple of times, it goes quick and easy.