I too am in Dubai and a have been a Raptor owner since 2010. Fitting a front bumper that is not stock will mean your car will not pass the RTA inspection. You will have to put the stock bumper back on to get it passed each year.
Frame modifications are a big no no with RTA inspection and should be avoided so don't go with any bumper that requires cutting of the front chassis.
If you go with an aftermarket front bumper I would recommend the SDHQ Trophy Truck style. I have seen this on an Abu Dhabi Raptor and it looks really good and also leaves a place for fixing the front plate so avoiding further fines.
I have mangled the stock skid plate and also a Ford Racing skid plate more times than I care to mention. All I do now is take it off and drive over it a few times with the front wheels to flatten it out! I've got the task down to about 10minutes and have a dedicated socket ready after my desert trips. If you go for an after market skid plate it would be a waste of money unless it has a tubular frame behind it to reinforce the sheet aluminium/steel.
I have tried like crazy with Al Tayer Motors to get the Middle East Maps CD and the SD card from them to update the nav system. I have the part numbers but they refuse to sell it to me because they do not have a price on their system and can therefore not sell it. Doh,
Make sure you buy the at the very least the SDHQ frame reinforcement kit (approx 100USD) or better still the bump stop kit. My frame is still straight but I fitted the reinforcement kit when it first came out. I find the front end takes the most punishment in the UAE dunes and have not really needed the bump stop kit.
My transmission temp has never got too high so don't bother with extra cooling. I have however cracked the factory exhaust manifolds and had to replace them with headers.
The BFG tires are crap in this heat and last no time at all. After going threw 2 sets in 2 years I've now changed to Mickey Thompson Baja ATZ's which are doing a great job both on and off road. Tire choices are VERY limited in the UAE for this car.
Hope my long term experience with this car in the UAE saves you a few bucks!
Cheers.