Welcome I have a 28BH '07 we just got last year, and I say x2 on your comment about good information on this forum! Unfortunately some of that leads me to spend money - I just got some stuff today for about $300! The FAQ for new owners is great too.
pressure reducer for water, X chocks, electric jack, pop-up trash cans, the memory foam mattress, the plug adapter are a few of my favorites so far. Since you have new you probably already have LED lights, that was big for me getting new bulbs.