I currently have 1-100W panel connected to a Go Power PWM controller that was factory installed on my TC. I just installed 2 UT 1300 Lion Energy batteries along with upgrading the Go Power PWM to latest model with Lithium battery support. I also added a Xantrex XC 2000 Pro inverter to the mix. Now I want to change out the 100W panel and install 3 215W High-Tec panels . Wish I could mount 4 panels just no room to do so. Should I connect 1 to the existing controller and add a Victron 100/50 mppt controller to handle the other 2 connected in parallel? Or can I connect all 3 panels in parallel and do I need a connector box to do so? We are in the PNW so lots of cloudy days unless we are traveling south. Any suggestions greatly appreciated!