if TS doesn't mind.. what is your academic qualifications.... if
you're heading on towards university... then you should consider
officership.
In any case i'm curious to know what made you interested in the
army. You see, prior to enlistment we have a set of idea of what
the military is like, and mostly (although not always) the pomp and
paegantry of parades, the honour of serving in an elite covert unit
etc...
However, this is quite distant from the truth where the work might
not seem rewarding and many people do come to realise they were
never meant to lead such a regimental life. But, by then, with your
signature on the dotted line... it's kinda hard to make that
U-turn.
As advised, do check with friends, read up on SAF... and better
still, experience Unit life ( that's after BMT) before you consider
a career.
If you are capable and committed, one can easily reach 2WO ( that's
the most junior rank of WO grade) in his early 30s. like 30 or
31.
cheers, just my 2 cents worth.