Questions on Dedicated 20 amp home wiring

Hello, I live in a home that is 45 years old.  I have purchased a lot of equipment recently and would like to add a dedicated outlet.  I need some help and was wondering if someone has a contact for someone to consult with.  I have the following questions:

1. what gauge wire should be used

2. Any specific Fuse that should be used

3. Any specific outlet that should be used

4. I have 11 sources, 2 solid state amps, 1 tube amp, 1 pre, 1 phono stage, 2 turntables, 1 tuner, 1 cd transport, 1 DAC, 1 streamer.  Can I use a single outlet or is it better to run two?

5. I'm using two Decware ZLC power conditioners each with 6 outlets, wondering if I can plug each into a single outlet plug and call it good after the home wiring has been completed?

Thank You