Question Should i buy this phone?

Hi guys,
I currently don't own this device but seeing it on xda had made me +1 to buy it.
But the problem starts here :-
1. Is there any chance of getting cynogenmod.
2. Will it get 4.x
3. Does this device support tv-out ,MHL?
4. I have never used Gionee phone so i m little worried.

I m confused in these phone
1. Micromax Knight.
2. Elife E7
3. Galaxy S4
4. Nexus 5

I do lots of heavy gaming and elife scores very high in benchmarks.
Press THANKS If i helped you or If you would like too