@mroth911 you need to have the ISP providers work together and setup this failover for you. This isn't something you'll be able to do within your budget or capabilities to ensure works.
Get Frontier and whoever your main providers are on the phone. Your ISPs can certainly do this, but you as a lessee of the IP addresses cannot, not nearly as reliably anyways.
And if this goes towards your goal of running everything yourself and setting up a true HA environment with literally 0 downtime then you absolutely cannot consider doing this yourself.