plz correct this for me I am not sure

[Unregistered]

I must say its incredibly wonderful of you to offer me so much of help.
I am very grateful for this.

(if i want to incredible thank some one for the help they r offering. the best way i can put it....?? )

 

[oregeezer]

I must say its incredibly wonderful of you to offer me so much help. (NO 'of'.)