Good luck with your gig, but let me offer you some advice.
Those extra benefits actually place you in a bit of a sticky situation legally. 100% satisfaction guaranteed, lifetime support, 24/7 service are all basically impossible to achieve. Unlimited revisions (for only $5 may I add) means your client can keep returning your work and asking for more improvements.
Of course it’s unlikely your clients will pursue breached contract in court. The reality on fiverr is that you are opening yourself up to getting scammed or treated unfairly by clients who will claim the work wasn’t delivered to those standards you have defined. That means they’ll get their money back (even after you have delivered the work) and there’ll be nothing you can do - you proposed a contract and they accepted, which means you’re bound to unachievable terms, the remedy of which means you don’t get paid and will probably get not so good reviews.
My advice is you remove those terms (excellent communication is fine) and focus more on the real benefits you can provide. Good luck