So now two years later fully rented at 6600 a month we do a cash out refi at 70% LTV pay of the 237k you still owe on the original loan and pocket 180k tax free dollars. don't forget the 100/month cash flow after debit servicing that turns into 4500/month in 10 years when you own that 600k property outright (neglecting appreciation) If you complete the flip at this moment you've made 480k after taxes with out any appreciation or about 830k assuming 4% appreciation.

Sounds like prescriptions for when 3% and 43% is exceeded mainly.Yes, agreed, however, need to clear something up, using "points" in discussions with seller financing is not appropriate, seller financing is funded by an amount of equity based on a sale price, it is not a cash advance or purchase money loan and points can not be charged on amounts of equity (points are prepaid interest) but can be on cash advances and, points are usually only allowed for institutional lenders, regulated brokers, banks, credit unions not individuals.

I just rehabbed and rented out my first SFR, and have set the tenant up with an automatic recurring debit through an online rent payment system.

You'll get a refund for any builders risk coverage you may have prepaid for.

I thing most flippers goal is at least 30%.My loans have origination fee's of 1%, with other closing costs (less prepaid's) being around 1.5%.

You can also get a debit card for the account or get a seperate credit card. 

And related to this last point, shouldn't the total money in the deal be greater, and include "total debits at closing" (B53)?

That does not include the prepaids you need for tax escrows.

On your books debit expense or capex and credit paid in capital for the amount on your cc

Dont forget financing costs, closing costs, prepaids, etc etcRoofing costs are VERY high right now.