First of all, congrates TS for moving the first step. For me, its depend on you, with the remaining balance whether you can survive till your next pay day. If the answer is yes then proceed. I am at the same stage as yours. But I will pay by my own, and TBH not much cash left after housing loan is paid. Hopefully i got better increment in near future.

No problem. For me, money we spend in travelling or unnecessary things are wasting our future money. Save more money, to spend it on family (kids/house/etc). Currently waiting for year end bonus, dumping them all in housing loan. I am with semi-flexi though. If anything happened need me to withdraw, i might withdraw from money saved in housing loan