If you could please tell me/us what is the total amount to finance? 

so you have the total Cost.then you see what would be the rent and how it could affect the NOI / Income once the work is done.  

Which scenario makes more sense, with $75K cash available:1) put $25K down on three separate SFR (in the mid-west) all priced at approx $100K each, that generate net cash flow of about $300 each = $900 total cash flow per month, or, 2) put the $75K down on one, nice $300K home, in a rapidly expanding market (LV, for example), in order to take advantage of the projected growth in the housing market over the next decade, even though there would be minimal, if any, cash flow while renting it out in the meantime. 

You can identify as many properties as you like as long as their aggregate value does not exceed 200% of the total net sales value of your current prop.

@Brian Kraft depending on age I use 50% to 55% on total cost to gross rent that is my rough in number.

I intend on keeping the tenant, but under a totally new lease.

We are totally new to the idea of owning rental property and would like any advice from anyone in the area. 

Complaints/pain points airbnb drives a ton of traffic and is most of my business but they charge about 15% total of a booking.

I agree totally with Seth. 

@Sai T.Had 3 total, just sold two.