You should be perfectly fine with a 6' Like I said it's not perfect but seriously mine served me VERY well for a long time and I had little trouble scanning in whatever I wanted. Spend time perfecting the install, it goes a LONG way and really helps performance. Also a good Digital PLL LNBF will help. Mine was so in tune it was amazing. My 7.5' is not there yet, I still need to adjust it some more when I get some extra time and it's a little warmer. but I live in a HOA neighborhood and I had to sneak the 7.5' up while people were at work and hope no one noticed the size difference LOL so it's performing well considering I adjusted nothing and just threw it up. I guess I'll tear the 6' apart, put it in storage and keep it for a spare if anything ever happens. also I have a Primestar 84e motorized for KU so that is why I never tried the Metal screen for mesh. A dedicated KU dish is the way to go, keep the C-band C-band. That is my opinion anyway.