At "a few times a year", the bulb might outlast the projector.
Is the screen already in place? If not, is the screen bundled in the $4K budget? It's a "cost", but a projector that fits the proposed budget could be borrowed or rented. If the project fails, the failure will be a cheaper lesson than purchasing a projector, then having the project fail.
Last edited by buzz on August 19, 2017 22:20.