Out of interest, how do you know FlyDubai will be operating out of JXB? Don't believe everything you read. This isn't to say they won't be, but current thinking is that they will operate from DXB, rather than JXB. I'm sure the issue will be resolved by those in Dubai Airports Strategy dept, but from what I know it has not been decided yet.
A villa somewhere in between might be appropriate, just to hedge your bets!!
PS..that's Al Maktoum International or JXB (IATA) or OMJA (ICAO) or AMIA DWC or or ......