I put a large block of wood under mine (same model you thinking of getting). I never have any problem with height by doing this. My plastic propane cover is pretty close but not in the way at all.
2013 White Hawk 28 DSBH
2011 Jay Feather X23J (traded-in)
2011 Ford F-150 XLT w/towing package
RoadMaster Active Suspension
Reese Trunnion Bar WDH w/Dual Cam sway control