Personally I think the real question is with how much detail can Rumps see the future?
Yep I too am pretty sure his collections are all to do with his master plan However He did make the curse/give it to EQ Well before we see his collections start happening! (so far) He had to have known he’d need Cinder’s child/baby to bargain with Emma for instance, which also happened well before the curse was enacted – I think the my biggest question regarding all this, is exactly how long has Rumps known ‘this’ future event & therefore being working or guiding everyone towards it & how exactly how detailed is his knowledge of future events?! Is it a bit Harry Potter & he could have chosen another? Did Emma really have to be the savior? etc
As far as the SW/PC true love hairs go I dont think they have much to do with Emma being savior personally (aside from the fact that PC/SW also had her lol) – he just needed 2 people who despite everything & one against them chose True Love, I mean look at how many power people including Genie you cant wish for True Love (it doesnt work like that), well now Rumps is the ONLY one we know of who has it bottled ready for use!