So, I'm getting two 23" Monitors in February. I have one already, it's a pretty old Sony PDM-234, 1200 x 1920. I want to be able to use Surround across the three monitors. Will I need two more 1200 x 1920 Monitors? Or can I just change the resolution of the 3 monitors to be 1080 x 1920 and use them in surround?