Actually "if" it's an option for you.. I'd do them all together. Car will learn.. then "unlearn" when tuned. As far as spacers.. no clue on the MM needed but you will need to be sure the spacers are hub centric - 66.8 mm I think of the top of my head.. and of course longer ball seat lug bolts.

Found you and your mech. a little something here..

https://www.crossfireforum.org/forum...dy-upgrade.pdf