I've decided I'm going to make the Acts from shortest to longest in case there's any quirks I need to work out before going for the longer Acts. Here's the order:

Act 4 - 1 set path unless you get the Good ending so a bit easier than looking up all the text for Monika's dialogue in Act 3

Act 3 - Arguably easier than Act 4, though I'd have to make her pick her dialogues randomly and look them all up, so Act 4 comes before.

Quick endings - E.g. when you delete Sayori at the start of Act 1

Act 1 (Genocide) -

Act 1 will have it's Genocide route done first because it'll all be contained in the one Act

(spoiler oops)

Act 1 (Neutral) - Same reason as Genocide, but with a lot more end dialogue because of the different combinations

Act 1 - Probably longer than Act 2 but no glitches so it's a bit simpler

Act 2 - The last Act that'll be made due to how much I'll have to research all the secret poems, random glitch chances and etc.

Side Stories - I've decided to make these whenever I feel like taking a break while making Acts. The first category will be Jokes, then Canon and lastly DDLC + just going from shortest to longest