Just picked up STANCE SS+ coils. Need for SPL/SPC front camber arms???

[DRFTR]

I just recently purchased a set of STANCE SS+ True typecoils. I've seen mixed reviews on need for front SPL upper control arms. I'm looking to eventually run a set of 20x9.5/10 front and 20x11/11.5 rears semi aggressive fitment. I know the factory arms are solid and more rigid, but lack adjustment points. I have a few really good Porsche tuner shops near by that specialize in suspension setup. My plan is to run close to factory camber specs (no hella flush/ over camber here). Plan on running a neutral drop, nothing slammed.

Anyone have any experience NOT running front upper arms??? I know the rear will probably be necessary.

Any tips or information is greatly appreciated. My car is mainly to be set up for spirited street driving (back country roads) with possibly some auto-x.