If you need to make an investment model change, take some time to gather info, contemplate the options, and make a business decision.

I’ve been contemplating the idea of avoiding SFH altogether and strictly focusing on a MF strategy.  

I saw this house about a year ago however at that time I was only contemplating getting into real estate investing so I did nothing besides jot down the address.Well, fast forward to about a week ago, I drive to see what is the status of the home and it still (if not in worse) condition it was in a year ago.

I am contemplating selling at $90k per duplex, $180k for the quad.

Repairs need to be specified, then if agreed to, you have an enforceable agreement, to a point within reason.You might agree to fix the roof, if it's discovered that fixing the roof then involves fixing the top plate of a load bearing wall, which then includes costly foundation repairs, that becomes unreasonable as that is beyond the initial repair contemplated, so the roof may not be repaired. :)

I would like to eventually have sufficient passive income to allow the choice to retire from a W2 job someday.With my very limited knowledge, I am beginning to think that investing in Colorado will be quite difficult, if not, impossible.This leaves us contemplating investing out of state; possibly in Oklahoma or Texas (or somewhere else).This presents its own special set of opportunities and challenges.I have a lot to learn and over time I suspect my goals will evolve.

I'm contemplating using 100% transactional funding on that one.

We are currently contemplating turning a few of our units over to a PM to see if they can do better, but I don't think they can, and it could be a lot worse with extra PM costs to pay, as Brandon Turner is finding out.  

Rest assured that what you are contemplating is unethical at best, and illegal and possibly could result in jail time at worst.

I have been contemplating that avenue of approach, but still researching the pros and cons.