Suspension Upgrade & Spacer Recomendation

Hello all, Im new to the fourms and was hoping to get some help

I have a bone stock 2006 TRD Off Road PreRunner Access Cab w/ 265 70 A/T tires and was considering making these modifications and wanted to get some input:

1) Billstein 5100s all around (trying to get max lift while leveling)
* I believe I have 4 leafs from the dealer before I purchased under warranty, have to double check

2) Spidertrax 1.25 spacers

3) Painting wheels black (what is the best way to do this?)

4) Tonneau cover (hard cover that is lockable, I heard Undercover is a great make)

This is my daily driver and would like to optimize highway performance.

Any input would be greatly appreciated. Thanks fellas.

 

If someone could give me an idea of whether this will level my truck with a noticeable lift I would really appreciate it. Also, would replacing the springs be an option to consider or AAL? I'm don't want to mess with the alignment, UCA or break lines so I'm trying to keep it under 3" especially with my smallish tires. Any input would be greatly appreciated.