I am finally going to pull the trigger on a metal carport and am limited on space. The biggest I can do is right around 24'X 24'. Height is important too and figured 12' with a no gable A-Frame will b...
If worse comes to worse since you are on gravel you could do a little digging down to make the landing lower. There is also the option of putting a short stem wall up to sit the cover on. Lot's of ways to skin a cat once put in a situation, however try to stay out of situations in the first place.