2008 sport package flares

Long story short bought 22" wheels from guy claiming that they are off X5 (5x120) turned out they are Porsche (5x130) too late to cry have to get custom adapters. Question is how thick adapters I should get.
Did my research a to get flush I should get around et25 front and below et20 front right?
Wheels are
22x9 et 45 front
22x10.5 et 55 rear
Thinking to get 20mm front which would make ET 25
And 30mm rear which would make ET 25 as well which may not be enough.
Question is do I really want to put 40 or even 45mm adapters? Isn't it little too much?
What do you guys think?