I'll assume you've negotiated the extended warranty price. Either way, $8K seems really steep. Read the fine print on any extended warranty to fully understand what is covered (especially around the electronics) and ask questions before you purchase. If the dealer cannot answer your questions with confidence, call the extended warranty company's support line to get clarity before you sign.
Check your insurance for roadside assistance, chances are you maybe paying for it already. Or check other providers such as GoodSam or AAA RV Plus. Unless you think you'll be without an income for a period of time, pass on gap insurance. Lastly, I've had no experience on the tire protection, but I declined given the cost.
I'm okay with minor break/fix stuff, but personally I like the piece of mind of having an extended warranty (at a fair cost) for repairs in years 2-5. Time will tell if it is the right decision.
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