And I could have 2 rentals with in 6 months The second option could potentially get me 2 rentals within 1 yr with better cash flow but now I don’t have any assets(my condo) to start. 

The kinds of attributes you seek will depend on your approach.Given your youth, take into account the potential for house hacking.

I think you may have very well narrowed down my strategy choices down to one of three; the BRRRR method (although this might be too much to start with for a newbie), the live-in flip that you mentioned (probably the most practical as I've been part of many different projects in the construction industry), and a combination of house-hacking/live-in flip (probably the most rewarding with a potential to swap between units as I finish one in order to bring better rental income).

3) the back of the property leads to a cul de sac which could potentially be another entrance - option would possibly be building a duplex or fourplex which would be less costly - then sell it and make another and use the profit towards the apartment building and just build 1 because who has that kind of money.

This residency requirement would apply for a specific period, so it's important to be aware of its potential impact on your plans.Its important to carefully evaluate the distinct investment opportunities offered by Colorado and Florida.

SMF you could start in the low 200's that are in a better area with cash flow potential.

That alone stops most potential investors.

It's best to review with a good RE attorney, potentially a business attorney, and your tax professional to make sure you're set up to avoid mistakes along the way.Also, discuss the ramifications of how it works with your lender (if there will be one) as not all lenders and loan programs are created equal when dealing with LLC's.

Just make sure to consider the potential limitations if you do decide to move later on.

My portfolio currently consists of LTRs and I am actively looking to expand it to include more SFH LTRs, and MTRs (potentially student housing).