Do the tuner, intake, DPF delete and EGR delete.
Tuners are various h&s, spartan and SCT. Innovative and Matt from gearhead tunes runs real well for the SCT but the module is not the top option.
H&s is also a very good tuner and you have the option of MCC tuning (make your own tunes) which there is a guide in here for a how to.
Spartan is a very good tuner with good tunes and an awesome monitor. You are able to moniter up to 9 parameters which vary from a wide selection from, oil temp, boost back pressure reading, tranny temp, coolant intake air temp... Etc.
All are capable of reading and clearing DTC's
Save your money on the gate unless you're planning on running larger turbos and invest on some studs and a stout trans and converter.
Edit:
I also forgot to say that there are many vendors on here that have awseome package deals for what you're looking for.
If you have any more questions just feel free to ask.