I get the whole horse and water thing, but I'm going to sat it anyway: Just get an SCT tuner which you will be able to get support for on this forum. Saving money on a tuner is not the place to save money, because tuning is the most important aspect of modifying one of these trucks. If the trans isn't tuned right you will eat the trans. I know from experience, and that's $3,500 I'm not getting back. There are a lot of ways to get power out of a Diesel with tuning, but only one right way, and with the best Ford tuners all using SCT the brain trust is with SCT. I'm sure I can write you a tune that will throw 50 degrees of fuel timing into the engine and make it feel like a rocket ship, and it will be, right up until the point where it blows up.
We get a few guys a year here asking for help with a Banks Six Gun, etc. Their posts go unanswered for a reason. I promise I'm not trying to be argumentative, embarrass you, poke fun, etc. I'm just trying to give you solid advice coming from a guy who's made some mistakes modifying his own truck that he's owned since day one. The best mod I ever made was the SCT tuning.
'06 F250 4x4 - 5" Flo Pro exhaust, SB Filter intake, Accufab elbow, Edge Evolution (monitoring only), SCT w/ ID custom tune, FASS 195 pump, Gillette Diesel EGR cooler delete, Sinister Diesel coolant filter, ELC coolant, updated turbo drain tube/oil feed line/STC fitting/oil cooler, ARPs w/OEM HGs, Elite coolant lines, ITP RR fuel system, RCD 175/30 injectors, Powermax, BD CCV, FICM.com FICM w/ ID tune, Elite UP, BPD water pump - 13.069 @ 101.94
'02 WRX - Outback rear disc swap, EBC green pads, DBA pillar vane rotors, TXS UP/TBE/TMIC, Perrin LW crank pulley, PPG billet steel shift forks, ACT Streetlite flywheel & clutch, K&N filter, STi Group N motor/trans mounts, TiC/Kartboy rear diff mounts/subframe lock bolts/outrigger stiffeners, Kartboy SS & all shifter bushings, custom PDX tune for Cobb AP - went 14.1 on a terrible 60ft before most of these mods; shooting for 13.50s