Sounds really great!
About that new circuit you are going to run.
You might think about a few of them or a big one that could run a sub panel.
I like having a few circuits like, one for lights, one for pumps and one for heaters.
That way one failure won't take out the whole system.
With a large system you might want 2 circuits for pumps.
I like to have a battery back up also.
Mine is set up with two golf cart batteries to run a return pump for about 8 hours.
I also have the vortech battery back up and would recommend them at a minimum.
About that new circuit you are going to run.
You might think about a few of them or a big one that could run a sub panel.
I like having a few circuits like, one for lights, one for pumps and one for heaters.
That way one failure won't take out the whole system.
With a large system you might want 2 circuits for pumps.
I like to have a battery back up also.
Mine is set up with two golf cart batteries to run a return pump for about 8 hours.
I also have the vortech battery back up and would recommend them at a minimum.