Hello to you,
CC is indeed the “End Game HIgh Intensity” event we get regurarly, but fear not, it contain a wide range of difficulty.
You can already go in the Contigency Training Mode as of right now to see how it looks, and even train yourself so you will be a bit more prepared (you can only acces the Dayli Stage that rotate, well dayli as the name stand for. The permanent stage will be added once the new CC start)
So as I said it contain a lot of different degree of difficulty, which is what we call “risk level” , the higher you go the harder it is, and you add difficulty by adding restriction to your run (such as no sniper, or high deffense for the enemies, lower health for you etc…)
So can you play the CC contract despite not having 10 6* E2Lvl90 ? Absolutly. You will be able to start grinding the first level and climb up reasonably.
Therefore, if you choose carefully what you want to buy in the CC Shop you will be able to buy the Welfare Operator, and even Pot6 it.
Don’t get me wrong, that will ask you to invest time, try to understand how the maps work (which why I advice you to already check the dayli map so you will get a glimpse at the stage and mechanic ahead of the start) and retry different strategie to make it work.
But you can make it work.
Now you probably won’t go to a full clear and manage to beat every Risk (unless you are really massive brain) but you will be able to enjoy (or rage) your time and get enough curency to buy some things.
Do you need 5* and 6* ?
Yes and No. They are more powerfull, we not gonna lie, but their power really start to stand up after Elite 2, so unless you’re ready to invest a lot on them, you won’t notice that much.
But then I need to E2 them ! you’re going to reply
Not necessarily, a lot of 4* do a good job, and can be usefull. You sure would see a difference with a 6* with masteries, but you will still be able to get the job done with 4*, especially in a CC mode where you can tweak the difficulty (the risk you choose) and try to take risk contract that align with your strong point.
As for advice to who to raise, I think more experienced people can give you better advice and build a good team with what you have (and even see with you which character you like to build someting around those)
But for what it worth here some thought:
You already raised Utage so I assume you like her
It is 100% worth IMO. Her skill maker her kinda versatile in a sense she can deal really good Art Damage with her S2, or plain Physical Damage without it.
Her talent make her a gatling gun when you manage to make good use of her (=manage to deploy her where it is needed and avoid her to be killed while staying on the death line of low hp) and while she won’t be able to solo a full wave (especially at E1) you can still redeploy her after a while, especially on CC where maps are long.
Plus she is a 4* so she is cheap to upgrade. Really worth IMO.
I would always advocate for Silence as a healer but since you didn’t raise her and you have Shining at lvl40 I would say try to raise Shining a bit.
I know the last level (60+) are a pain, so maybe raise her to 60 for now (and if you have time after all the other advice here, maybe try to E2 her) but most importantly Raiser her skill.
I don’t know if you did it/saw it, but you put her S2 as your main skill, and this one goes from “shield that last 2seconds […] Can hold 1 charges” to “shield that last 3seconds […] Can hold 2 charges” at level 7. So try at least to raiser her skill to level 7.
Try to raise one of the other healer, at least Perfurmer, so you would have an AoE heal and more importantly 2 healer that you can deploy.
That would give you a bit of versatility and survivability to compensate the lack of level of certain unit.
(Here again, whoever you choose, try to raise her skill to level 7, so you feel a bigger “burst” of heal when you use the skill)
I would suggest then to raise Mousse, since you already maxed her E0 level, so you would have another Art Damage dps. She is quite good IMO.
And/Or Amiya so you would have a good Single Target Mage, plus beeing the center of the story, you will have free Potential Token given to you later on.
That would be all for me, I will let other people more familiar with team building give you better advice, but that’s how I personnaly would see “easy-to-raise” things to go.