Congrats...I see hours and hours of FUN in your immediate future!

That N + 1 thing is no joke! In 2 years time I have acquired...
1st road bike (entry level, aluminum, sold this Summer to a friend)
2nd road bike (mid-range, carbon)
1st CX bike (entry-level)
1st mtn. bike (1/2 original retail, since Cdale greatly overestimated how many petite size F5s they needed to make in 2009 and had a warehouse full of them to liquidate)

I didn't even think I'd like mountain biking...and wasn't sure I'd like CX. Turns out I love 'em both.

DS will be getting his first serious first-hand bike for Christmas (Redline Conquest 24). Eventually the plan is for him to inherit my Redline Conquest (which should fit him once he outgrows the 24) and my mtn. bike. Then I will upgrade both.

This N + 1 thing will never end in this house, at this rate.