Plan on packing in heavy duty double boxes with at least 2" rigid foam between boxes (not peanuts) AND around the speakers in the first box.
Strap to pallet
Attach an orange "NO STACK FRAGILE" cone to the top of the box. There is also a Do Not Stack box to check on the Bill of Lading form.
Lift gate pickup
Lift gate delivery
Add $100 to quoted shipping cost for each
Insurance is based on classification, read the fine print. Some freight companies might cover the entire replacement cost, the cheapest shipper will cover pennies on the dollar and you will need to buy supplemental insurance.
Truck drivers are not required to help in any way. You will never get a pallet on or off a truck without a forklift or lift gate. On delivery the pallet will be dropped off at the curb, after that it is up to you.
Take lots of photos. The box should look something like this, but with straps too:

I always used FreightQuote, prices are fair and cheaper than if you tried to ship yourself. FreightQuote is a shipping consolidator for LTL freight. If there is a problem FreightQuote will take care of it, freight companies do not want to upset one of the biggest consolidators in the US. If you hire a shipper directly they don't care if they screw you over or piss you off because you are shipping only once.
https://www.freightquote.com/Remember, these guys are professionals, they can put forklift forks through anything.