Nice looking truck, you have 37" on it? There is a lot of info I would need to know to help you out. If you are running stock 3:73 gears then turbo section is going to be limited.
The people that run tall tires with stock gearing need to know that it is very easy to get under a turbo, and if you chose too big it will drive you crazy. The tuner can't write a tune to increase RPM at say 70 mph on freeway, so with stock gearing 3:73 and 37" tires at 70 mph, RPM's are going to be about 1600-1700. Those RPM's will get you under a turbo really fast( for those don't know getting under turbo means when you at a set rpm cruising and step on it you just blow smoke for a while before the turbo can make boost) When at 70 RPM's I like the truck to be at 2000-2100, and have the turbo boosting at 5-6 psi, that way when you hit it the turbo lites off and bam you are gone, with almost no smoke at all.
Back to your combo I think the best bang for the buck is 175/75 injectors, regulated fuel return, a Powermax with billet wheel, or a stage 1 MTW, and custom tunes to bring it all together. Make sure you have supporting mods intake, exhaust, egr delete, studs, metal pipes. You can get ported intake to help also. I know that this combo minus the ported intake will be good for 540-560 rwhp, Stage 1 or Powermax with the billet wheel. You won't need a fuel system and the tranny should last as long as you don't beat on it too much. The combo will also run pretty good with the taller tires and stock gearing.
Now if you want a cost effective way to go keep the 03 turbo and have the front housing modded to a 63.5mm/88mm billet wheel, and you now have a Powermax.
2004 F250 Ext.cab fabtech 5.5" lift,and traction bars 35" on 18".2005-2007 grill and LED headlights,58v FICM, Warren dual HPOP system, fuel reg. return system, areo 1000a fuel pump, dual fuel filters, ARP studded heads, CCV reroute, EGR delete, 225/75 Warren injectors, water/meth injection (cooling mist),SCT tuner with customs, banks intercooler. MTW stage 4 turbo, built trans by Andy Warren, 4:10 Detroit lockers.