Custom Registration page for Jomsocial

This may be outside the scope of your support, but I thought I'd ask for help here, as Jomsocial's support is so slow and you guys are so helpful.

Jomsocial has a funny "Home" page that is hard to customize (requires hacking core file of the component) and is not very pretty or useful. (The dreaded "Get Connected" page.)

I'm trying to set up a custom registration page that would have both a "Register using LinkedIN" Button that ties this JLinked, as well as a form that is effectively the beginning of the standard Jomsocial registration process.

I've seen your tutorial on how to drop the Login with LinkedIN button into both the "Home" page and the registration page. I'm concerned about doing either of those changes, since my template (RocketTheme's Tachyon) is managed by Gantry and I don't know how this change might have wider consequences.

I'm lousy at SEF and can't figure out how to force a link directly to the registration page, avoiding the "Home" page.

Any insights here? I wish Jomsocial had a component menu item option direct to "register" but alas.

Thanks for the override tip.

Is there a way to style the "Login with LinkedIN" button that embeds with {JLinkedLogin} be bigger or different? Looks small and lesser compare to the "register now" button here on my new front page:

disruptivatecommunity.com/community