The closing costs come to around 5K on a $105K loan out of which $1K is prepaid & escrow and monthly savings on interest is around $180.

It varies, but let's assume it to be $300.your actual paycheck is $2,000 - $153 -$300 = $1,547your company sends your $153 portion of FICA to the IRS, and it adds another $153 out of the company money for the other half of FICAyour company also sends your $300 to the IRSat the end of the year, you will have already paid all of your FICA ($7,344 if you care), half of it from your paychecks, and the other half from the company moneyyou will have pre-paid $300 x 24 periods = $7,200 of your income tax to the IRS.

If the tenant moves during the three month prepaid period you have to give the tenant the rent that has not been used.

Do yourself a favor, and calculate the total cost of closing, which includes points, loan origination, escrow, title, appraisals, inspection, etc, but not pre-paid interest, insurance and taxes.

White CoC is simply a way to compare apples to apples, so to speak (and it's really guesswork)....it's the relationship between the cash that comes out of your pocket to do the deal and the net operating income...So, on your $100k property, you have $20k down and you will have closing costs as well...you will have lender costs, maybe a rate buydown, possibly prepaid items, lenders policy insurance, recording and title fees, etc....and if you are doing a renovation, you will have upfront costs for the work and holding costs for maintaining the property...all of the costs associated with getting into the deal should be considered out-of-pocket. 

The buyers costs include the other 1/2 of the title insurance & closing fee, pre-paids which start your escrow account (assuming you are not paying cash), the fee to the lender, appraisal cost and recording/filing fees for the deed. 

I'd like to hear more about your journey pre-paid coach. 

I’d require rent to be prepaid at closing and/or withheld fro seller proceeds.

I'm not advocating that accepting pre-paid rent is the best option, but I'm also not convinced that it's a bad option, especially if the lease agreement is buttoned up tightly.  

They simply state the terms of the lease, the amount of the security deposit and any prepaid rent, and the current status of rent payments.