Membership site for worldwide companies lawyers and accountants

General information for the website: Membership website
Description of requirements/features: I require a membership site creating. The members are worldwide. I would need 3-5 different types of members starting with free trial and maybe bronze silver and gold options.

I have used Envanto before for some templates and are familiar with this website and like some of their templates.
I prefer this to be in HTML but open to Wordpress but need convincing that this will work for me.

I have looked at this template that might work for me :http://wp.nootheme.com/landmark/

This is to create a responsive website with back end for me to edit the members and clients will need their login area.

Once this website is completed and launched then development will be ongoing.

Please message me for further questions if required.
Extra services needed: Installation
Extra notes: If you have had experience of membership sites before or template membership installs then might might help.