Looking for plugin suggestions

Hello, I am thinking of implementing a VIP area on my existing site via a menu link going to a page. I am looking for plugin suggestions to pw a page on a site, I found a couple so far that are ok but I am sure others know of some great little secret ones. I think something that will allow many users and many backend usernames will be ideal, with possibly the expiry function. Still trying to think out the details but those are limited by the plugins. I would also use each individual usernames in woocommerce coupons to implement any specials.
I would also like a plugin that will allow custom feilds for a user to fill out to submit to me so that we can tailor marketing to their needs. Not sure if that exists.

My plan, mail out a vip card to select customers with a code on it or distribute in the store, user navigates to said page and uses the code shown to login for special offers.

This is still in concept stage but ideas and possibilities are limited by the plugins I find.

Thanks for your help!!
S