Hello-
We have been working with a web designer who is creating a site for us using WordPress to manage the main content.
We have products and a cart to use to be sell some products. For this, the checkout implementation uses TransFirst's checkout which directs outside of our lunarpages site to enter the CC information, process the submission and then forwards the response back to our site for notification. (not a big fan of this implementation from a user experience perspective, but that's what it is for day one)
We were told that we should purchase an SSL certificate for our lunarpages site for this.
Our questions are:
(primary question)
1- Would having our own SSL certificate for our domain, while TransFirst's certificate has its own for its domain, cause any issues for security or warnings to users due to the different certificates?
2- For our main site, since on potential purchase / redirect, a user would be redirected to our https site, should we just forward all users coming from http://www.oursite.com to https://www.oursite.com
3- Do we need to anything different for the http and https sites
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Orthohin 
