My opinion only. Would it not be easier and less expensive to replace 454s with 454s. The boat would have value if you decide to sell it. With the outboard conversion, you will have a very very small group of people that would have any interest.
I am not sure what the VG4 system is exactly. Does it not have a seperate pump that can be replaced. Try these people, they are awesome. https://www.environmentalmarine.com/
It amazes me how much time is spent on rebuilding these pumps. Parts are almost half the cost of a new pump. Frustration is equal to the other half. A new pump, 2 wires and 2 hoses, done.
Before you jump into Starlink, I saw a new antenna that grabs the best cell signal in the area you are. You but usage, but it seems like $50-60/ month will stream all the stuff you would need. I will try to find that info again.
All my buddies switched from Bud Light to other beers because of the fiasco. I decided, I like Bud Light and stayed with it. In the beginning, people would actually give me crap at grocery stores buying it. Did I like the ad, HELL NO, but I did like the beer. I decided I was not going to punish...