Eventually, I'd like to utilize a 1031 exchange to trade up into larger multifamily units.Thanks in advance for your insights!

The problem is that there constantly seems to be fees being charged to me an example of this is in the contract  there is an additional 100 dollars allocated to sewer and water that the tenant automatically pays every month with rent and anything outside of it should be billed to the customer (there is no specificed time when this will occur on the contract) but it appears to be billed to me and after speaking to IIP it's like they made up rule on the spot stating that after 6 months all of the additional utility fees would be billed to the customer and in the meantime I am being charged for it.

Will need to deal with Land use, utilities, trees removal/mitigations.

Once you stabilize the property with a tenant, you may explore a cash-out refinance to utilize the increased home value for additional renovations.

I utilized 7% for CAPEXand 7 % for maintenance given recent updates .Tenant pay for electricity and gas.

how can I utilize my 6 houses and cross collateralize ?

I would love to connect with people in Northern New Jersey that are utilizing the Medium Term Rental strategy locally; specifically furnished rooms that are being rented. 

What your considering here is some franken-sale "monster" of twisting these 2 into a manner neither was ever meant to be utilized as. 

I have been doing some research but I need more specific information about things like buying the land and the permit issues and utilities and things like this.

Sounds like you may have utilities that tend to come with easements.