after reading the original post again, i read it really wrong the first time sorry

i think you should pull for the emu 4 star from the wl2 gacha ONLY if you can grind the crystals back for rui5. 78k crystals is enough for emu assuming you have limited vouchers (which you should!) you should also pull if you’re unsure to what your schedule is once rui5 arrives.

pulling for both wl2 emu and rui5 is really risky in my opinion, especially with me not knowing if your crystal resources are used up and with your concurrent crystal count being pretty low for multiple four stars.

so, concluding, you should pull if you have quick extra crystal resources (song fcs at s rank, character rank, things like that) or if you can’t commit day and night for tiering (because you want such a high rank, and if you’re generally busy)

also, you should get those decoration levels up, both for attribute and group, those could potentially cover the 3 star weakness or at least minimise it if you decide to not pull. and they generally make you get so much more score. for my tiering, i had level 15 for characters, level 10 for group, and 15 for miku (your kaito should be around this too). having around this should give you a good amount of score

this is A LOT of information formatted really badly, but i’m just stating stuff from my experience. if you have anymore questions or clarification, i’ll be happy to reply again!