Ok...I'll put it to you this way. Right now I've got a dual MTX 12" Terminator vented enclosure 1000w RMS. With a Kenwood kac9106 1000w amp powering them. 1/0 awg wire to power block under rear seat with 4 awg to Amps. I've got BOSS audio 6.5 in doors and 6x9 over wheel wells. With a JENSEN 1000w 4 channel amp powering those. So you can see how much of a noob that I am and in desperate need of an upgrade. My next plan is to get custom speaker pods for doors and a pillar. Dual 6.5" or dual 8"??? I was thinking 1 6.5" and 1 8" and 2 3.5" in each door. And 2 3.5" each A pillar. And dual 15" subwoofers.....???
If you wanted to get a second set of components up front check out Q-forms kickpanels and see if they make something for your truck. They're very easy to install and are good for imaging. If you want to pay someone to do custom panels/pods for you it would be horribly expensive and if you want to do it yourself it's still going to be expensive and very labor intensive. Also hope you like itching from working with fiberglass.
You had better have deep pockets or be very good with custom fabrication if you want to try to pack your door with 8" midranges and build up A pillars.
Do you have a good selection of woodworking tools? If you want good bass you're going to need to start at building a solid box correctly sized for your subs.
Finally if you want to start adding more power you're going to need to do some electrical upgrades such as finding a high output alternator and investing in more battery.