I’m a web consultant and run my own studio in Perth Australia. If you want to plan for the future, I would seriously consider checking out a more sophisticated and managable community solution than WordPress + Plugins.
WP is great for a quick site – but keep in mind that it’s the number one targetted platform for hackers and it struggles a lot when it gets a lot of engagement – ie signups, using forums etc. Also, when you update you risk losing plugins.
If you want some ideas I’d be happy to give you some – not trying to step on toes or anything!