To completely ignore your question, why do you describe your system as "midfi"?
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Without knowing all of the details, if you are set on Square D,
( I like square D ) go with a NEMA 3R NQ Panelboard. This may be a bit of a stretch for a residential electrician to grasp. You want to insist on QOB ( bolt in breakers, not QO plug ons ) You can spec the interior with copper buss ( CU ). It will cost more than a Home Line load center. I purchase this this type of material on a weekly basis. If you really want to blow his mind, ask him to use "Copper Koat" on all of his connections.
( a real audiophile would insist on an exotic silver paste, but I can not recommend a product that is not UL Listed for that purpose ) The things that you could address are almost endless.
Thanks Mrderrick, it is taking me some time to grasp all the information that you doled out on me.
Do you think homeline panel should be just fine OR should I stick to my original request ( copper bus panel) even if it means keep talking to more electricians?
Btw, I am in no rush and can wait if it makes significant difference.
Stick to your guns and don't let an electrician install a Square D Homeline panel. Go with Square D "QO" or my favorite, Cutler Hammer "CH" style panel. The electricians are also going to give you grief about the 10 gauge wire for you dedicated circuits, but demand it. You may have to pay a bit more to find an electrician to do these, but now is the time to get it done :-).