I feel for you. I need 22 foot pairs of speaker cable and the cost is more than my first brand new car. I paid 2500 for my first brand new car in 1971. 47 years later, that 2500 would be more like 5-6K.
Whoa! Maybe move the amps closer to the speakers and/or move the speakers closer together. Or look around for a more cost effective speaker cable. Perhaps consider making your own. There are many ways to skin a cat.