I did a calculation and ended up coming up with something like $600/mo which seems quite a bit high, so I lowered it to 6% just because there is no way my math was right on that.

I agree that it's nice to have consistency and many investors are willing to accept a lower return for stability.

If the pest report states $5000 in damage then you can also ask the seller to lower the price or fix the pest problem prior to buying the house.

Then they contact the auction winner, offer to sell at the auction price (maybe lower, maybe higher) and walk away with the difference. 

I would try to get this lower than $217k IF and ONLY IF you have the backside systems in place to close the deal properly and are prepared to purchase the property should you not find a buyer.  

As others mentioned a Windows PC will also do the job and at a lower cost, but if you are more familiar and comfortable with a Mac, then spend the extra money and get a Mac.

You are essentially paying points to get a lower rate with this lender. 

If you are looking to lower property taxes you could try to argue your latest assessment with the county. 

Your travel expense stays lower that way. 

For the buyer, I would think the advantage would be in the $184k version since you have a lower down payment since there are both 5% down.