It is very easy to rent those homes (if i ever needed to). 

I did add a high maintenance percentage to cover any direct damage.As part of the town rules there needs to be an onsite property manager.  

For example starting payroll, filling W-9 for independent contractors, tax rules, bookkeeping e.t.c?

There is no quick and easy money.3.

It sounds like you might be referring too one of the three available replacement property identification rules which allows you to identify any number of properties as long as the combined value of the identified properties does not exceed 200%. 

you have a lot of options at that price range. jersey city is big and it is divided into different areas (high level): newport & water front, downtown jersey city, journal square, heights, greenville and bergen lafayette. for your price range, it might not be easy to find a good cash flow place in downtown or newport. you can check out multi family house close to the light rail in the heights; also places in journal square close to path station. also there are some places in greenville or bergen lafayette that have easy access to bus and light rail but you should do more homework if you want to house hack there. it varies street by street. 

It is not easy to set up this approach but once established it is bliss.

You are right wholesaling isn't easy but it is doable on a budget.

Hi there, I'm unsure of the tax rules in USA but I'm familiar with them in Canada and I'm assuming they are similar with respect to depreciation (CCA in Canada).

Mobiles in a community are subject to lot lease rates and community rules that you are responsible for similar to a condo except governed by the community owner.