Tasha, if use cloth diapers, need to get around 30-40.
Usually 1 day will use up around 10pcs (or more for BF babies). Then usually is soak in a large pail of soap water, end of the day then wash all together, hang dry. If weather is good next day can use already. If weather not good, need to sun for 2 days.
You intend to get the maid so late? If you choose a maid now, the maid will arrive in July (if passport is ready). So that will be abt 7th months already.
I personally feel not enough time to let the maid get used to your family & the routine. Also, the first one that comes may not be ideal, so you add on to your frustration by then.
My friend got her new maid in her 6th month. End up the maid can't tahan and she request to go back to agency. Then she tried getting a replacement, wait & wait. Now her baby 6mths old already, still no replacement maid cos the other maids that came, all can't look after newborn. & my friend has already quit her job cos no one to take care of bb.