Given the choice I would prefer batmix, bat guanos are great stuff! I wish my country wouldn't had it banned. My old organic mix was guano based and it rocked.
So start with 70%bat mix /30% coco or 50/50 in 7 liters pots, top dress bat guano/
Gaia green 444 at day 30 veg or when needed, watch plants for their needs. Veg for two months I would recommend.
Transplant one or two weeks before flower for a 20+ L pot with pure batmix and do another topdress, than day 30flower another last top dressing.
But you would always watch if 30 days between dressing are too long, than you can top dress every 15 days for you example l. For flower I would top dress using the Gaia flower dey mix with less nitrogen and a low.nitrogen guano too.