You are free to build whatever you want, sell the house once is finished, and the lien-holder (original seller) is paid off through title when the new house sells.

Engage an investor-focused realtor/broker in your preferred market (this is not a residential realtor) and start 'tire kicking' the market and properties that fit your criteria.

@Derick Jennings Without knowing more about your situation, I'd likely recommend a house hack, a strategy I wish I would have known about when I got started.

That is a great nest egg to build upon, and it diversifies your wealth.

I am investor myself, but I’m now diving deeper as an investor friendly real estate agent helping others build their portfolios.

I'm working on building my buyers list, as well as just networking.

Because I need cashflow proceeds to start being withdrawn in 2 years and not today, I'm looking for how I can build up the empire with a larger portfolio with continued investments beyond the initial $250k now.  

I’ve been using PropStream to build solid lists, but now I’m at a crossroads.

I'm gonna have to start calling ya "Money-Bags Collin". 

Start with BiggerPockets Ultimate Beginners Guide (free).