if you are seriously considering signing on to have a career in
the army, either you sign on as an officer or not at all.
I see that you cannot pass your ippt at all, which means you are
not a very 'garang' person and this is the determining factor for
promotion.
Just think after army come out what you gonna do? drive taxi?
property agent? no skills no specialisation, just a regular in the
RSAF who want to hire you?
If you signing on for furthering your studies(loan/scholarship
for studies) i say go ahead, but i doubt so you are...
If you really want to ruin your life/career, carry on, sign on
as a specialist.