Help- New to S2.

Hey guys and gals! Im new to S2Member and really hope this is the plug for us!

We are building a membership based golf website. There will be 2 types of members – Players and Advertisers.

We are running it on WordPress and have a GoDaddy hosting account.

I am concerned with security as we will be having a ton of credit card transactions through PayPal with thousands of members.

What suggestions or recommendations do you have to a newbie who has never used a membership plug in but is comfortable with most things in WP?

What steps should I take to ensure the fullest security- we are willing to pay top dollar for best security. SSLs?

Thanks so much in advance for all of your help- we really appreciate it and are looking forward to being part of this community!!!

The following are suggestions directly from WordPress about hardening your installation:
http://codex.wordpress.org/Hardening_WordPress

At the bottom of that page are other resources you can read. Doing some google searches for “securing wordpress” and “hardening wordpress” will get you a number of good resources.