Regarding security levels and abilities questions

Hellow to Teamwork support

My needs

I need to upload a large number of independent AE template files to the Team projects to adjust them with other creators in Team project platform. After one of the members make the requiring adjustment, I need to be the only person that can download the final version of the team workspace.

So my question as follows:

1. Can I control that no team member can copy, download any of the materials I upload at any giving time?

2. Can any member work on the templates with the plugs I have on my PC?

3. How many members can I add?

4. Is the Team project is a secure space for me to upload all my templates and share the workspace?

5. Is there any storage limitation on the account?

6. can I terminated the monthly subscription at any time?

I thank you in advance for the answers.

Lior