If I got your point, your idea is to get a personal loan in Qatar (same term than your contract) in order to finance the payment of your house in your country.

But:
1) personal loans normally are higher than housing loans. So I think that you can get housing loan lower in your country than a personal loan in Qatar - for instance, I have my housing loan in my country at "Euribor+0,39" - which means something around 5,8% nowadays (puf!) but if I ask for a personal loan the minimum I have found (in my country) is 7,6% (that is the interest of my car loan). So, get a personal loan to finance a house I think is not the best option.
2) you think that in 1-6 years you will be able to pay the whole amount of the house (if it is not fully paid, it will not be at your name in day 1)? How cheap are the houses in your country? or how high is your salary in qatar?

BR,

War looking for peace,
is like fornication looking for virginity.