Using a power strip in an old home that was build back in 1955

I may be living dangerously, but nothing bad has ever happened. I've never had a fire start or anything. Maybe I'm just really lucky.

Your circuit, which likely consists of several to many wall outlets, is likely on a 15amp breaker, if you have breakers.   This can be easily overpowered with that number of outlets on one strip.  Add up the amps of each thing you intend to plug in.

22 is too many things and noisy to boot.

I agree 15 amps is not a whole lot for high end systems.  Better to feed your rack from more than one circuit, if possible.

I wanted to have a third pin actually grounded where the outlet's third pin was not connected.  Got an electrician who ran a wire to a water pipe in the basement.

My home was built in 54’. If you have conduit, have an electrician pull all new wire and grounded outlets. Mind you, the outlets must be to a grounded panel as well. 
I would do this if money allows. Should be about 5k. 

I had to work through that same problem being my house was also built in the 50’s.

I guess it is a common practice to replace two prong receptacles with three prong receptacles to increase the homes resale value. I was pretty pissed to find that out after purchasing my house that all the outlets other than the ones in my basement, bathroom, and kitchen were not properly grounded.

I hired an electrician and they ran ground lines for the outlets in my AV room it was only a couple of hundred dollars because the breaker box had already been upgraded.

It sounds like OP that you seem to have some concerns with the way you are solving your problem or you would not be here asking for our advice? Cheers