Spacer size for 285 square on stock rays?

zeeder

I've searched several times and I can't seem to find the answer to this so I finally decided to ask it. I'm wanting to go to a square setup when I need new tires but I'd also like to get some spacers. My suspension is completely stock with no plans to change anytime soon and I don't want any rubbing. I daily drive my car so I only need to worry about spirited driving and the occasional auto-x event. Ideally, I would like to do 20mm all around so I could use the bolt-on type but will go with stud replacement if I have to.

So, will 275/19 or 285/19 work without rubbing problems? Since I'm wanting to increase the width in the front should I put a larger spacer in the back? What do you think the best spacer combination would be for the best look without the possibility of rubbing? Lastly, if I have to go stud replacement will this mean that my wheel locks will no longer fit? Thank you in advance for any information you can provide!

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Zack
FI catback, HFC, and Start Button - Z1 Intake - Nismo S-Tune Spoiler - PasswordJDM V2 Shift Knob