No equity to compare.Cash outlay to hold is estimated at $40k. 

When you get a payment estimate for the hard money that should tell you if the deal is a fit for your cash position or lack thereof.

With the property losing money at that occupancy - which could be normal for the park, I don't think the benefit outweighs the risk - at best you're only bringing in another $5600/mo but with my estimates on RV parks, your expenses will eat that up pretty quick.  

In additon to that, non local lenders often don’t know that Philly transfer tax is 2.14% so their loan estimates are often incorrect.

Save a portion for estimated taxes and roll what's left into the next property.Don't let the tax tail wag the dog when you're just starting out. 

I’d like to learn some basics as we get into the landlord’s game but I think we’d defined be hiring this out, so shopping around and comparing estimates will probably be our next move.

Utilities (e.g. water, electricity): is $300 / month a reasonable estimate? 

Roofer & 1 GC already recommended re-doing, both with similar estimates of 20K for an 900 SF flat roof.- Main beam twisted and loly columns - bones of the house and that worries me- Back wood stairs that lead to backyard from 2nd floor are not properly attached to houseSo far Im bringing (2) more GC to provide estimates for repair of 3 items above and then go back to negotiate with sellers in this crazy sellers market :S.After this intro I wanna ask the community if you have any experience negotiating with issues above? 

Most companies use Loan to Value to estimate the equity % in home.

If you’re still in your inspection period or can access the property try to get a plumber and a contractor in to give you an estimate.