The kit will have the instruction of how to build the rifle with it. It is basically sand, finish, & assemble from the ones I have seen. You won't need the above mentioned books to do this rifle as there is no building, it is an assembly kit.
Now if you decide to build a rifle from parts, then the above books are a must IMHO, as otherwise you may have invest $800 in parts & end up with a $200 rifle
Since you are also new into ML'ing, I suggest you buy the Lyman Black Powder Handbook and become familiar with what you are about to get into. Good book for a newbie & will answer lots of questions.