Here is a link to a PDF file with some advices from Caelin Gabriel.
I did 5 20A circuits, 10 awg, in phase, all in equal wire length.
Fwiw Albert's PorterPorts are a reasonable cost option vs others.
A whole house surge protector is inexpensive insurance. Caelin recommended me the Leviton 51120-1.
And good luck with those neighborhood approvals !