I walked the entire property a few weeks ago. The trailer park is only visible from the very top of the property, and on the backside of the rock formation. The main part of the property can't see the residential area due to the rock columns@SERE Nate
That is a beautiful place. Have you actually been to the property?
The reason I ask is: Your prospective clients will not be looking at photos of the land when they get there. They will be looking at their surroundings.
You mentioned that there is a trailer park across the river. I see a couple of roads fronting the other side of the river, one that looks like a highway. These are things you should consider, as they will directly impact the experience of your (potential) clients, and the amount you would be able to charge.
You should be able to get 1st time visitors with a good marketing campaign. But the real value of a marketing campaign is "customer acquisition". Unless you're selling widgets with a huge profit margin that will pay for your marketing, you need to turn those 1st time customers into return customers. Under promise, over deliver.
If you don't succeed at that... Well, take a drive around the country. You'll see plenty of evidence of dreams that failed. These carcasses of broken dreams litter the rural landscape, mostly due to lack of experience and sufficient capital.
I would say that If you're going to offer a unique place to stay that is really hard to get to, you need to be far away from trailer parks and highways.
You need to study your competition.