New to rx7
 

I got my first rx7 and i love it.
its a 1999 type R with 70,000km driven only
its on stock turbos with power fc and a downpipe
coming from ford mustang background. I own a 2009 GT500 a cobra svt 2003 procharged and a GT 2005

i will order a rocket bunny kit for my Rx7
so i saw these wheels https://esrwheels.com/collections/3-...=3795572490280

these are custome wheels, i am planning to go With 18x10.5 in rear and a 18x9 in front i know the pcd is 114x5
but what is offset etc i dont know
and how wide can i go in the rear
and also i wana ask 😬 can i go with 19s is it possible
thanks