Looking to fit a new distribution system as I'm renovating, looking at using diplexer skts by each tv in bedrooms, kitchen and lounge. Have humax free sat boxes and a tv with freesat, the others are freeview. What I'm looking at is the Triax TMP 5x12 running wf100 twin to each room plate (2xsat 1xtv 1xuhf) What size dish do I go for south coast uk? The 4 sat feeds that goto the TMP will I be ok with 15-20m wf100? On the terestial side what triax combiner do I need here ? Tv / FM / Dab TV antenna is fine need to add new fm/dab is there a combine antenna?