Well, you own vBulletin and have a vBulletin hosting site that will install it for you. While you are saving your $ for a custom site, maybe you could get started with a little volunteer help from your ADV friends... If you get vBulletin installed and align your initial requirements to what the software gives you out of the box, pick one of the free themes, maybe you could get your site up and running at little to no cost. Later on after you have saved up some $, you could give it a makeover/upgrade to include the custom bits. Just an idea, anyway.
07 Yamaha XT225 - Std Color
07 BMW F650 GS - Black