Originally Posted by
flyer4512
No idea on card # 3 but my guess is if you were able to open 2 of the same card you can open more.
Amex has a 5 charge card limit across all products from what I have been told
The older NAF HH you are holding should have a upgrade to Ascend offer so you can get 150K HH points and Gold status for spending $3k and paying the ( PRO RATED) $95 AF
Not to be a nerd, but it's 5 credit cards; charge cards you can hold an unknown amount of. Maybe all of them if you meet their approval criteria since they are not based on traditional lines of credit.