Ecoflex15 inside the house is overkill i think. Better use some Aircell 7 or Rg142 types, easier to use for short runs. I use that too, even thinner ones.And to the dish, you can even use Ecoflex10, that gives you almost 3dB loss on 2.4GHz. You will see with max 5w on a 1m dish,ur signal will be more then 20dB above the transponder noise. At my setup, 95cm offset, i use 1.50m Sucoflex-104 (so 0.5dB loss) between transverterbox and feed.