You won't find copious support for SMF. I notice since your site is still under construction you might still be in the market for forum software. Run, don't walk, to vBulletin.com and pay the damned money and run the best forum software on the planet in that price range including any freeware competitor.
Not only are there tons of themes, best and most secure and stable code, but the features are the most modern and easiest to use, the most customizable including plugins you can download or write yourself that NEVER affect the core code. This means powerful addons with version control and upgrades of the vBulletin itself is quick and painless with no hacking involved.
And of course it used here on MacRumors, but that's not why I suggest it.
I don't work for them, I am just a long time BBS SysOp turned online forum admin who has used 'em all since the mid 1980's and I am a licensed vB user who appreciates the quality. Hard pitch over.
(If you're happy with what ya got, no need to defend your decision, just choose not to reply, I don't expect to convince everyone!!)
-jim