The rents cover roughly 40% of everything on a monthly basis (P&I, insurance, utilities, property tax) and the remaining 60% is from me.

I really want to utilize the FHA because you can only use that once and the sooner you use it to invest the better.

My ultimate goal with this possible rental would be to utilize the profit to purchase a few more short term rentals (not necessarily on the island) and then diversify into long term rentals as well.

For manufactured homes on their own land, be aware that a manufactured home that's been moved more than once, even in good shape, can be harder or near impossible for a normal buyer to finance...so in the case where you're putting each on it's own piece of land, you may want to/have to owner finance.It doesn't sound like you're very experienced with the permitting/utilities/etc portion of things,  each piece of land will have it's own unique set of development costs & challenges.

If the properties are larger they can utilize Fannie and Freddie that also lends to foreign investors. 

You may want to check out the utilities. 

The previous owner would convert a single MH pad to 2-3 RV pads, swapping out a single pad rent of $280 for 2-3 pads at $450-$500 each (including utilities).

I will take heed to this advice and utilize it. 

Since there is so much content at your disposal, it can be a bit overwhelming at first, so here are six key actionable items that you should take utilizing BP.

@Hector Naranjo I'd suggest even before paying for any tools, Create an excel spread sheet that factors in all of the expenses i.e. repairs 5%, Capex 10%, Vacancy 7%, Taxes(get from assessors site), Insurance(get quote from broker), management 10%(even if you are self managing), landscaping/snow(depending on market) and utilities.