I have ran HB forever and would love to switch to 100% Garmin but can't afford that. I am consider doing away with one of my HB and the 360 and replacing it with panoptix. I would be running two 1199 HB front and back and one Garmin up front strictly for panoptix. What is the best/cheapest way to do it? Looking for a 10 or 12 inch screen. I m not real familiar with the different models.