currently have a slimline dish with 4 wires running to a zen 8 way multi switch which splits off to the rest of the house. Want to get whole home dvr up and going, what would be the simplest and best setup. Have an hr21, h21, and h24, the h24 has convenient access to my router so keep that in mind for adding internet via coax with a decca device. There is convenient access to power at the current non swm multi switch in attic. Want to do this myself to save money if I can. Some opinions and recommendations on needed equipment would be very helpful.