I have tweaked a few things to make it work better for me.I try to evaluate a couple every day just to get better at the process.

I may tweak some criteria and geographical parameters, but that's about it.  

I love building them and tweaking them, and plan to be in your position 24 months from now, if not next year.

How much time you spent to "tweak" the site on a weekly or monthly basis.Thanks in advance!

You might make this easier by making the one who lives in the master a very trustworthy tenant and giving them a discount on their rent in exchange for handling everything as a property manager.Like @Bill S. said, good job taking action and now that you have those assets you can tweak them as necessary to make them cashflowing assets.

I have never done an Owner-finance deal,so do not know how the numbers can be tweaked in my favor.

Start analysing at least 5 deals per day (tweaking your spreadsheet as you go along) and when you get to 100 deals analysed you will be far further along the road than you are now.

The formula of ARV x .70 minus repairs = MAO (Maximum allowable offer) still applies but needs to be tweaked depending on the market. 

The articles of organization were basically a boiler-plate with slight tweaks for our specific situation.

I've always gone with you can advertise but don't show an available day until you will have it ready to rent and available this will give you a feel for demand and allow you to tweak your add as you see fit.