Church pool RE-construction

[Sumo1]

Still no replies!? Come on, ladies and gents, I need y'all. Tomorrow's a pool work day and we've got sooo many questions
Question of the day: After we've patched any worn spots in the plaster layer (with white portland), we won't have enough money to plaster it this year. If we use 2-part epoxy paint to coat and seal the pool interior, how long would that treatment be expected to last? Two years or three? That would give us time to raise another $25K for plastering. Would that paint then cause huge problems for the plasterers? Or should we then just keep on using epoxy paint? Thanks again!
Hal