Hello Pastor,
Hope you were able to solve your streaming issues with Starlink.
We also have limited availability to high speed internet.
Like you, we have tried cellular, although this option worked, it was too limited due to data caps.
We currently have DSL @ 30 down and 3 up. Although this is a solid platform, 3 Mb's up is hardly adequate for streaming at or near 1080p.
I have recommended we also look into the Starlink option. I have it available at my home, and it appears to be getting faster with each passing month. Averaging 155 down and 17 up.
Here are a few recommendations you may find beneficial.
Live stream with Box Cast (https://www.boxcast.com/) This will allow you to stream to a single service, then they will rebroadcast to almost any social media outlet. Facebook, YouTube, to name a few. We have used this service for almost two years, and it's impressive, with only 3 Mbp we can achieve 1080p streaming.
Use a router that supports Dual Wan. With this feature, you can combine two ISP providers to increase throughput (Load Balancing), or have it set as a (Fail over) for backup if the primary goes down.
Here's a link to our YouTube videos for review https://www.youtube.com/channel/UC6wAIZmPVn1keTD4rkEm1tQ
New Faith Community Church
Holopaw.church