I got to know the Louisville area very well during my life, but do not know anything about the Columbus area; popular, growing, safe neighborhoods etc.  

Of course I know this number will vary and flucuate as life goes on, but as of right now I would only need 14 doors under my control in order to "Retire" :) I would like to get into multifamily investing, but I know at first I may need to start of small.

Then save with the low monthly mortgage payments and buy another property soon.B) Use an FHA loan with 5% down payment, which will make my monthly mortgage payments significantly bigger, but then use the remaining of the money towards an investment property with a conventional loan (20% down payment)C) Rent a condo as my primary residence and use the remaining of the money towards investment properties with conventional loans (20% down payment)What would you guys recommend for someone who wants to retire early but doesn’t want to have a frugal life?

FHA continues payments towards MI for the life of the loan now.

Many of the hurdles you experience in real estate (and life) will be self-imposed and are much easier removed that you may think.

It takes up your time and it takes time to work the internet to return yields.In other words: Above paths will demand most of all the precious time input from YOU.There is a better solution.I didn't see the need to try another app like Arsenal MKg, and I'm not saying some might be happy with it, however, it depends on where you are currently in your business skill, knowledge and mindset level.I'm a commercial real estate syndicator and life long marketer, so yes, my response might sound bias to some, however, the real question you need to answer for yourself is: Do you want to be and stay stuck with the immense repeat time investment and painful learning curve, which no software will solve for you, or do you want to focus on growing your team (with the appropriate skills) and business by doing what you do best (outsource the rest): Buy & Sell real estate.Food for thought ;-)Feel free to check out a few of my other comments to other fellow BP-users on this same subject.A great book on this subject by Timothy Ferriss,  The 4 Hour Work Week.

Here are some booksMultifamily Millions by Dave LindahlThe ABCs of Real Estate Investing by Ken McElroyThe Complete Guide to Buying and Selling Apartment Buildings by Steve BergesCommercial Real Estate Investing by Dolf De RoosTrump: The Best Real Estate Advice I Ever Received by Donald TrumpTax Free Wealth by Tom WheelwrightCommercial Real Estate 101: How Small Investors Can Get Started and Make It Big by David LindahlRaising Private Capital: Building Your Real Estate Empire Using Other People’s Money by Matt FairclothThe Definitive Guide to Apartment Marketing by Josh GrilloInvesting in Apartment Building by Matthew MartinezCrushing It in Apartments and Commercial Real Estate by Brian H MurrayThe 7 Secrets to Successful Apartment Leasing by Eric Cumley2 Years to a Million in Real Estate by Matthew MartinezBurn Zones: Playing Life’s Bad Hands by Jorge NewberyCommercial Mortgages 101: Everything You Need to Know to Create a Winning Loan Request by Michael ReinhardIt’s a Whole New Business!

She chose N.D. school because it is her passion for life, don't ask me!

But the guy that owned the place was a great salesmen and taught me some life long techniques for closing.

That being said, you have to life there and if you have real problems or need cosmetic updating, it's worth it to address those.