I can't answer some of your questions, but as far as the street side slide out I also had one on my previous 28RKX. I bought one of the swimming noodles, slit it down the middle and stick it on there...it sticks out on both ends and if you do bump into it...you bump into the end of the noodle...no hard-no foul. I actually started carrying spares to give away when I met others with the same setup. They don't cost that much, they're great conversation starters...and it's a nice way to make endearing friends.
Travel well, whichever unit you choose,
Jim & Linda Tator
2013 Crusier CF34SS GMC 3500 8.1L Dually
154 nights in 2013 - 4,370 miles
178 nights in 2014 - 5,082 miles
365 nights in 2015 - 6,040 miles