I'm sorry I can't give you a better plan, maybe some will read this who has another idea.
How's the pool surface holding up to the scrubbing? How are your numbers holding?
A couple warnings about algaecides:
Some have copper - not something most that really belongs in a pool - It can stain the pool, fingernails and blond and colored hair.
Some have ammonia which can combine with chlorine to form monochloramine ( an effective algaecide but stinky and irritating ) however a tremendous amount of chlorine will be consumed trying to overcome the ammonia and chloramines.
Some have Trade Secret - I'd never put that in my pool.