Do you think the supreme court would uphold it?
A lot of it, no, but I suspect that Roberts and his cronies will support the insurance, training at a minimum, meaning many thousands of dollars to own four firearms. Let's take a guy who has a shotgun, a bolt action or even single-round hunting rifle, and two pistols, one for him and one for his wife. That works out to:
$800 x 4 = $3,200
24-hour training x 2 = $1,500
Registration fees (remember the $800 is the insurance) x 4 = $1,600
Lookee here, government expects the citizen to pay $6,300 for exercising a ******* Constitutional right.
Most citizens will not pay that amount and be deemed criminals. If convicted, they are no longer eligible to own guns.