Yash,
I think vellnaveen's predicament is that this "bird in hand" might become a bird that will stick to his hand and not leave him for a long time.
vellnaveen,
Perhaps the only factor for any aspirant regarding such decisions is MONEY.
If you are financial comfortable to simply sit and wait for some vacancies to come up, without being in debt or making your dad/mom/brother/sister work overtime to repay loans, then you can easily avoid this "bird in hand" and wait patiently for other attractive birds which might come up in the future. Meanwhile try doing something else to spend time productively, or simply purchase some multi engine time if your finances permit you.
If not, then it is better you hang on to this one for the time being. Something is better than nothing.