Russo430

Hi guys I just picked up my fist Lexus and got a completely stock but fully loaded LS430 low km car and in great condition, iv been more of a sports car guy before this so reading the threads and trying to figure out what most people do has been a big job.

Currently looking to put wheels on not sure if i should do a air suspension controller or goto coil overs, personaly i would like to have air ride just for the experience
I have my eyes on a set of 19"x 9 front and 19"x 10 rear and from what i see on here that's kinda modest
also was hoping to fit general G-Maxx
235/40R19 front
255/40R19 rear

I was hoping to run a 40 series tire for the extra protection up here in Canada our roads aren't as flat

Thanks, any help is good or even links to a good post that i might have missed