Evidence of English: Masters degree in American University

Hi, I am putting the documents together to apply for AN after I have just received my PR backdated to April 2008 (I am an Italian citizen).

I have searched extensively the boards but I am not 100% sure if this is the right path to take:

I have a completed Masters Degree from a US university and I can provide the original certificate. I have just ordered a Statement of Comparability from Naric and I have asked my University to send me a letter stating that the degree was taught in English.
Is this sufficient?

It is one of the 3 listed documents to send but your note about checking with HO whether they would accept it after 2016 has worried me.

I also have an ERASMU certificate from a UK university (albeit this is not a degree, just a letter saying that I attended the ERASMUS in a certain UK University)
I have a certificate in Finance from the London business school
I have a TOEFL passed (I know that it is not accepted anymore)

Does anybody think I need anything else?
Anybody used a US masters degree successfully ? what additional documents did you present?

thanks! ciao Alessia