Suggestions for improved clearance

[mmoncay11]

Hello guys. I have a 2017 Silverado RWD. That has a spindle lift currently. With the spindle and a small level it sits at around 7” of lift (install shop said it should be the equivalent of a 4x4 with a 6” lift). There was some light trimming done. Mainly zip ties on both wheel wells. 

 

I’m running 20x10 -18 wheels wrapped in 35x12.5 Toyo RTs. With only one passenger and myself there are no clearance issues. However once I add people in the back seats I get noticeable rubbing on turns and when backing out of spots in reverse. 
 

I plan on taking it back to the shop. I was thinking adding Bilstein 5100 adjustable struts in the front and changing out the control arms to clear around 2 more inches in the front. Hoping it alleviates the rubbing. Do you guys have any other suggestions for my situation? 
 

Thanks