I had to make a new post because my previous post was rather long.
The last thing I wanted to say was in regard to Books.
I gave you my recommendation order on who to Upgrade.
I gave you my recommendation order on who to Master.
The last thing you asked was who to use your Books on!
My recommendation is highly unusual for some people.
I know people who do what I am about to recommend, but I think the averaged Raid person doesn't think about it.
What I would do is not upgrade any hero fully!
I would only try to upgrade specific skills!
It takes a little bit of luck, but it can be very effective!
I would do the following:
Lightsworn ---------> A2 skill to max (Attack Down Skill)
High Khatun -------> A2 skill to max (Turn Meter Filling Skill)
Catacomb C. ------> A3 skill to max (Rally Skill)
If you was to upgrade all of these heroes skills to max, It would cost you 40+ books.
You only have 11 Books.
There is no way for you to turn 11 Books into 40 Books.
Instead of trying to upgrade all the hero skills to max, I would try to upgrade specific skills.
I would try to upgrade the skills you really want to use the most vs. Clan Boss.
The idea is to try and stretch out your 11 Books to help as many heroes as you can for your team.
There is no guarantee a book will go into a specific skill.
It is completely random, but you can try!
You might get lucky.
I would add 1 book at a time.
I would hope all of the books go into 1 specific skill.
Than as soon as it is fully maxed out I would stop!
Let me give you an example of what I am talking about:
I recommended for you to use Lightsworn in your Clan Boss team.
The reason why I would use Lightsworn is because he can do Attack Down Debuff on the CB.
Attack Down helps your team live longer in the Clan Boss so you can do more damage!
Lightsworn Attack Down Debuff is on his A2 skill which is a 4 turn cool down.
It would be better if you could reduce the cool down to only 3 turns!
If you add all your books into Lightsworn, It will cost you 9 Books total.
You will be left with only 2 Books left.
You would be unable to upgrade any other hero.
My recommendation is to try and stretch your books.
If you look at Lightsworn A2, It only takes 4 Books.
If your really lucky, You can use 4 Books on Lightsworn.
All 4 of those Books could go to his A2 which is the skill you want the most!
Than you will have 7 Books left over to be used for another hero!
Do you see what I mean?
I wish the game allowed us the opportunity to upgrade a skill which we want specifically, but they don't let us.
It is completely random.
However, what do you have to lose?
You was already thinking about upgrading his skill.
You was already thinking of using 9 Books on him.
Using 9 Books on Lightsworn would help him do more individual Damage, but Clan Boss is a team effort!
If you put Books on several heroes spread out, You could help the team do more over all Damage.
Than later on when you get more books.
You can slowly max each one of them out to do full damage potential!
Again it is something to think about.
It might seem unorthodox to people who are not use to the idea.
It really isn't talked about a lot.
It is a concept high level players do which sometimes they don't say or tell other people.
They play the game so long - it becomes second nature to them.
They don't even think about recommending it to other people.
I like to mention it because some people are not aware of the idea.
Anyway, You can decide for yourself if you want to do it.
People have given you good advice on this thread already.
I am just giving you a different perspective.
The way people approach the game can be different.
It doesn't mean 1 way is good or bad.
It is a different interpretation of the game.
