this is my situation: i need advice.

[Jonathan Beemer]

Hi BP,
im looking for some advice on my future endeavors and what you advise me to do.
this is the run down:
im currently stationed overseas. i will be stationed back in the US in 10 months. where? i have no idea... i will find out soon and plan accordingly.
i should have around 20K to invest once i arrive. i will only be there for around 14 months until my contract is up and i will most likely be exiting the army from there. after i will be moving to tulsa, OK to continue my investing. but while im in the army i think it is a great time to begin my investment to set me up for the future. especially with a stable job and with the army paying me for housing (approx. 1K a month)
upon arrival i will not be purchasing immediately. i will be renting a cheap apartment for a short period of time... lets say 6 months. during this time i will be researching the area and networking with other investors to see the best options of that area. also, finding out what loans are available to me and other options of financing.
when its time to move out what investment should i look at.
i was planning to purchase a duplex. rent out 1 unit and live in the other to pay for the mortgage and other expenses. i may need a property manager, but i could also learn the landlord myself.
with this i should be living for "free" and getting an extra 1K per month from the army for living expenses, which i can save up. then most likely ell it when i move.

this is my plan so far. if anything needs more explaining please let me know.
if you see any mistake tell me. 
if there are other options, please advise me.

thank you!