305/65r17 Request for Information

There are many like it but this one is mine... Stock 2017 TRD Crewmax/ 275/55r20.
I extremely close to pulling the trigger on the following and would love to receive input and/or guidance from this vast storehouse of knowledge:


BFG T/A KO2- 305/65r17
Method 701 (Black); 17 x 8.5; 0 Offset
Bilstein 6112 @ 1.3 setting or possible lowest setting
Bilstein 5160

Course of Action -1
Measure all 4- Measure top of wheel lip to wheel well edge
Install shocks and wheels & Tires
Measure again
Alignment
Drive for a week
measure again
Jack up rear at the drop hitch
eyeball it level
Measure and determine if I need a shackle and what size.

Im expecting it to rub front wheel well liner and the front air dam flap gizmo. In this case I will either let it rub or perhaps trim/mold...

Appreciate your input.