I think that a quality agent that truly understands how to run numbers and analyze deals to lead you in a good direction is what you need to get over the final hurdle. 

The biggest hurdles, obstacles, and challenges in life that limit your belief and mental structure in no particular order:1)Thinking where you start is where you finish.2)People resting or stopping in the middle, not at the end. 3)Prioritizing instant gratification rather than delayed gratification4)The controversial mark twain  quote or not quote--It ain't what you don't know that gets you in trouble, it's what you know that ain't so.5) The lack of an ability to move on.6) Not appreciating the power of delegation.There's probably 2-3 others I am missing, but over time these have rang so true in any instance I have faced in life.

Development costs will often be the biggest hurdle, meaning: sell the land you have and buy an existing park, campground, rv park and "upgrade"/ convert the sites to tiny home compatible. - and you'd be ahead.

I'd like to get some input on reasonable vs unreasonable fees for property management. 

Thus far I have consulted with a mid-size, local developer contact to gauge any challenges with developing on the land and potential hurdles with subdividing.

"unreasonable", "ocasional", "seemed to be in breach of rules" etc, but the matter is the your certain case only.

The value is the largest hurdle you are facing.Pulling the cash out to payoff debts is sound and if you can free up enough cash to purchase another cash flowing property, you are all win-win. 

I frustratingly see so many deal offers, particularly in Multi-Family space, where GP/sponsor is putting nothing or next to nothing into the equity portion and is collecting 2-3% acquisition fee/ 0.5-1% loan origination fee/ 1.5% yearly asset management fee/ 1-2% disposition fee and then 50/50 splits to 60/40 splits over fairly modest hurdle rates of like 14-15%, and it seems this latter structure incentivizes GP to take more risks particularly with debt options.

We literally just got through the 6 month hurdle to get it into the LLC; now we are told it has to be a second home mortgage and back in my name to pull equity.Current loan is 237K owed; 450K+ apraisal value

Quite honestly in that scenario I get frustrated with the seller's agent because you know that The agent if they were doing their job would explain to them that that is not generally how these things go and that they are being unreasonable.