Tip 1: If possible, always MLB the appearance rate CEs
reason being
due to the way it works, bringing 2 non limit Appearance CEs only inceases the rate by 40% as each gives 20%
hence bring 2 non MLB and a support MLB appearance CE wont always gurantee a 100% rate
so always MLB the CE if possible, of course this mostly applies to the 3 star CE, and the sakura CE
as for the sakura chip CE, honestly it is not worth to MLB the CE,
firstly due to the fact that there is no other CE to increase the currency drop.
two, bringing 2 copies already give the same amount as if you MLB it, and in certain nodes you can even bring more if you have the right servants, potentially giving + 3 more.
third, the effect of the CE outside of the event is honestly one of the worst 4 star CE, even when MLBed.
buying 2-3 copies of it should be sufficient
if you need to farm chips, farm using appearance rate CEs.
Tip 2: Minimum and most efficient clear
The safest way is to
spend the first 3-4 days, clearing the bare minimum amount of mission you need to clear the story up to the final chapter
Story missions are unlocked thru buying items from the shop using the sakura money currency
You need 5.1 K sakura money to buy ONLY the items you need just to clear story
Another 3.2 K is needed to buy enough items to unlock all the remaining free quest nodes
So with that said, here are all the missions you only need to clear to get thru the story and free quests
8 Defeat ｢TYPE I｣ x30 500 Sakura money 100 KP
11 Defeat ｢TYPE I｣ x120 800 Sakura money 600 KP (unlocking this mission also requires one to clear mission 9 and 10 which also gives a total of 600 KP from those 2)
15 Defeat ｢TYPE III｣ x30 500 Sakura money 200 KP
16 Defeat ｢TYPE III｣ x60 700 Sakura Money 400 KP (requires mission 15 to unlock this but you'll prob have done it anyways)
20 Defeat ｢Sakura｣ x150 400 Sakura money 400 KP (unlocking this mission also requires one to clear mission 18 and 19 which also gives a total of 300 KP from those 2)
29 Defeat ｢Shapeshifter｣ x80 400 Sakura money 400 KP (unlocking this mission also requires one to clear Mission 27 and 28 which also gives a total of 300 KP from those 2)
31 Defeat ｢Sakura Worm｣ x30 500 Sakura Money 200 KP
37 Defeat ｢Lawful｣ Servants x10 300 Sakura Money 200 KP (unlocks after clearing Act 1, iirc the lawful servants you defeat in story before unlocking adds to this count)
40 Defeat ｢Neutral｣ Servants x10 400 Sakura Money 200 KP
45 Defeat ｢Chaotic｣ Servants x30 500 Sakura Money 600 KP (unlocking this mission also requires one to clear mission 43 and 44 which also gives a total of 600 KP from those 2)
48 Defeat ｢Mythical｣ Servants x10 500 Sakura Money 400 KP (This is probably gonna get translated to divine)
49 Defeat ｢STR A or higher｣ Servants x10 800 Sakura Money 600 KP
(Servant list: Lancelot, Beowulf, Lu Bu, Arjuna, Rama, Cu alter, Jalter, Salter, Cu proto)
51 Defeat ｢Oriental｣ Servants x10 500 Sakura Money 600 KP (Asians, So the chinese, Japanese and indian servants)
56 Clear ｢Head｣ Quests x10 300 Sakura Money 100 KP (Not sure which parts count as head)
57 Clear ｢Arm or Hand｣ Quests x10 500 Sakura Money 100 KP
61 Clear ｢Back Arm or Hand｣ Quests x10 600 Sakura Money 600 KP
The 2nd shop is the KP shop, the minimum amt of KP needed is technically 0, but if you want to fight the less tedious boss, it's 15 k
Clearing the first 6 missions give you 2k(these 6s are auto cleared)
Add in the minimum amount you'll get from missions
7500 KP total from the missions, + the 2K , definitely not enough