Except that this time the difference between a regular army and a militia would be far beyond just the color of their coat.

Having weapons at home can barely counter law enforcement, let alone a professional military force.

This time there's more technology supporting each area of warfare: logistics, reconnaissance, equipment, vehicles...

A militia, however organized, has everything to lose against an regular army in the 21st century. In fact, chances are you would die before you are in range to fire your weapon.

Your only chance to win would be insurgency or guerrilla warfare.