Transportation with a pick up

LINKS AND INFORMATION PAGES THAT MAY HELP ARE SUPER WELCOME!!!!

Hey all. My husband and I are starting a small hauling company out of VA. There are a few things I am trying to understand better to make sure we are doing this right.
We ARE moving things across states.
The heaviest things we haul is 1-2 cars or things like kubotas.
We are running a 2011 Dodge 3500 Heavy Duty.
This is commercial Hauling.
YES. Some of these questions may seem stupid or dense but I am new to this which is why I am asking questions instead of playing know it all.

When talking about IFTA...is it 26,000 lbs including the weight of the truck, trailer, and load?
Is 3 axles including the trailer or only the truck?
Do we need IFTA stickers if we never haul anything putting our combined weight above 26,000 lbs.

MC# - is this something we will need to get or do we only need our DOT #?

Do we have to follow all of the regular DOT regs that big rigs do?

What other DOT Regs should I look into for this type of hauling? (Yes we have an E-Log system)


Thank you all for your info!!