My plan is to live here, make some improvements, for the next two years or so until I finish my dissertation and graduate from PhD, then sell the place as I move to somewhere else after graduation. 

WY is often recommended for a holding LLC as they have excellent statutes, anonymity and reasonable cost.But like all general rules there are a lot of exceptions that may be related to your specific situation.I would recommend that you spend some time watching the YouTube channel of Clint Coons.

If you have a plan on where to invest it to get a better return then go for it.If not then look at ways to improve cash flow such as sub metering the electric, water and gas and arguing your property taxes down with the assessor's office (the tax assessment dispute typically takes place once or twice a year depending on the city). 

I remodeled the unfinished areas of the house and improved the landscape.

@Britany Beckman YouTube Enemy Method Short Term Shop.

I am sure there are many posts about that here on BP and you can also search that on Youtube. 

In general, many residents are OK with lot rent being raised as long as the costs are justified and they can physically see where the money is going with the types of upgrades and improvements made to the park.

My father also uses it for his home improvement company for years.

With that said, beyond people stumbling upon your VRBO/Airbnb listing, driving traffic to your page is tough and something I will be working to improve. 

You don't have to approve all maintenance requests, especially requests that improve the property beyond condition when rented.