Lift install and alignment help

Soon I'm going to get my lift installed. I got the Dobinsons 2.5 kit and SPC upper control arms
After the install I need to get the alignment done, I have a friend that works in a shop and he was asking if the alignment should be back to factory specs or something else. After a bunch of reading I found this from
AxelsHumanDad

"STOCK TRUCKS:
Camber: +.1 degree camber on both sides.
Caster: As much as possible without sacrificing +.1 degree camber or causing a cross caster pull.
Toe: +.12 degrees per side for a total toe of +.24 degrees. (some guys have had to drop toe to +.04 to +.5 per side/+.08 to +.10 total toe)

LIFTED TRUCKS:
Same As Above ... BUT if you have wheels that have more negative offset than foctory wheels, increase the camber to +.2 degrees. (or even +.3 degrees if they just can't get there with the amount of adjustment allowed by the eccentrics) Adjustable upper control arms are available for cases where there just isn't enough adjustment left in the eccentrics to get a decent alignment. Although they are expensive, most guys with lifts have a lot of $$$ invested in tires so you need to make a judgement call."

I'm running the stock TRD rims so I should tell him to get it to the stock specs?

Sorry this is my first suspension lift, still trying to learn.

 

Your best bet is to contact Dobinsons and ask them what alignment specs works best with their lift on your vehicle. I've done this with the manufacturer of every lift I have installed on my trucks.

 

I'm not understanding the numbers or explanation you posted. Your rims don't dictate alignment specs but your lift does have an influence on how much caster you should try to achieve. The bigger the tire, the higher you want your caster.
What you should shoot for, w/a 2.5-3" lift, is:
Camber: As close to 0° as possible. No need to have the tire leaning in or out for any reason. Shoot for <.5° each side.
Caster: 3.5-5°. Any less & steering will feel too darty & will follow grooves in the road.
Toe: As close to 0° as possible, but with a c-hair toe-in (+) or toe-out (-). I prefer ~.05-.1° toe-in (+ toe).