I am new to this flyer game, and still figuring out how to play it.

Questions
(1) What is most important to you in a FFP?
Reply: free reward flights

(2) How many miles do you usually fly each year & in what class? How many flights/sectors?
Reply: 50000-75000 in economy class

(3) What types of fares do you usually buy?
Reply: lowest economy

(4) Can you choose your airlines and/or class of service? Do you travel for work and/or pleasure?
Reply: mostly work. I can choose to certain degree

(5) Which routes and airlines do you fly most often?
Reply:

Syd to Scl
Syd to LAX
Syd to SIN

(6) What is your home airport?
Reply: Syd and Scl

(7) Do you have FFP status of any kind in OW or other airline? What is it? Do you have any miles banked in a FFP?
(AA Executive Platinum, QF Gold, UA 1K, LAN Comodoro, etc)
Reply: I do not understand it. So I guess no. LANPASS says I am PREMIUM (not sure what it means).

(8) Preferred Airlines? Most common Airlines flown on?
Reply: Due to the Routes very mixed. Probably Lan and Qantas due to the home bases.

What should I do? I now have mileage programs with LAN, AA, Delta, UA, so quite a mess I have created. I will probably choose one from oneworld or starA that has good connections out of Syd, but QF seems bad. So what to do?