I am not a fan of TK, since even in the best-case scenario, mathematically turn key just doesn't pencil out.Having said this, there are several issues.

You are the one failing to supply the mathematical calculations of how you plan to replace $8,000 a month in appreciation. 

However as a Economics guy I have a very solid theoretical/mathematics foundation I'd say.

Most have a basic allergy to mathematics so you have to make sure they haven't "accidentally" made a mistake.  70% of brokers don't know the difference between cap-rate and cap-ex.Have you physically been to the property yet?  

Mathematically, $20/month cash flow with $0 in the deal is infinite returns, but what is your time worth?

If you are using a mathematical calculation that results in something other than 8%, it means the model is wrong.

Is there a mathematical formula that Investors primarily use implementing the ARV and a couple other factors?

Depending on where you are it could be the case that $18k is not enough for multiple properties, also unless taking care of children your wife working would make sense mathematically. 

just look at it mathematically lets say the rent is 1k a month you just lost 4k.. lets say you dropped rent first few weeks by 100.. and it rented.. it would take you 40 months to break even.. also just as an aside do check with your insurance carrier many times you have small print that says your insurance will not cover you if home is vacant more than 60 or 90 days.. you need to add a vacant home ryder..

Hello all,I recently attended one of Brendan's webinars, upgraded to pro, read his no money down book and I'm currently in his rental property book. I'm new to REI and would like to better my game at every level. One ...