The layout is similar to my 26RR, and if its level, you might be close as you go into the camper. As previously stated, you can lift the front using the tongue jack, or place some blocks under the door and use an additional ramp.
As far as experience with this type of camper, I have had mine for 5 years now. The wood work is cheap, but the camper itself has been surprisingly trouble free. We fulltimed in it for about a year and use it at MX races 20+ times a year and the only issue was cooling the unit down in the summer. The aluminum sides transfer a lot of heat to the interior, so shade is your friend if you use it in the summer. Also, the tanks are small, so extended boondocking requires planning.
2016 26RR and a 2018 OR371MBH