Are these sentences OK?
(I don't need more)
I have as much money as I need.
I have as many friends as I need.
I have all the friends as I need.

Question

Are these sentences OK?
(I don't need more)
    I have as much money as I need.
    I have as many friends as I need.
    I have all the friends as I need.

Answer

Hi Pelin, 
“I have all the friends I need” and “I have as many friends as I need” are correct versions of your third sentence.

The first two sentences are correct.

Answer

The first two are fine. 
In the last one you need to delete the 'as'.