Offset for 17x9 with factory flares?

[Transam19791]

I have 285/70/17s on the truck with factory 17x7.5s and they sit too far under for my liking. Im starting to go crosseye'd trying to find the correct offset for a 17x9 to sit flush or slightly wider than the factory flares on my escalade. Anyone have this setup?

 

[Transam19791]

I have 285/70/17s on the truck with factory 17x7.5s and they sit too far under for my liking. Im starting to go crosseye'd trying to find the correct offset for a 17x9 to sit flush or slightly wider than the factory flares on my escalade. Anyone have this setup?

Well I went with +12