Bridged controllers and Google home

Hello everyone I am a 15-year Vera user. I would like to post this question. Vera customer service bridged my Vera edge with my Vera light which are in two different buildings on my property everything’s working fine. Is there a way for me to just use one controller dashboard instead of switching back and forth between house and garage controller? Garage controller is master because it’s the edge. My controller are connected with Cat6 cable. Also I am starting to install second generation light switches. Do you think I can get rid of the Vera light in the house and still have all the Z-Wave switches communicate by just using the Vera Edge? I have about 15 ten-year-old old Z-Wave devices and 3 brand new 2nd generation light switches