That sounds like a good plan but I do not expect it to be self-sustaining at all or to be funded by grant orgs unfortunately due to how this works.
We need more CF alternatives.
The problem is on Nostr people expect things for free and complain about ads, which makes it unreasonably expensive (relative to income) to use other solutions, and none of the big grant orgs are willing to provide enough funding to get a CF-free alternative off the ground. "Just enough" to make it work.
At the same time, CF can subsidize smaller customers which may become larger enterprise customers, and can work on massive economies of scale.
(On Nostr.land there is no CF except for DNS (registration was done there but will move out), and on Nostr.build everything except media serving is not through CF)