Too Small for Forward-facing Carseat?

Well, that's one option...

My little Lamb is apparently on the gangly side.  He's only around 20 lbs, but recently I noticed his fox shoes are hanging over the edge of his rear-facing carseat.  Our pediatrician said that we can move him to a forward-facing seat whenever we like, and Lamb's grandma gave us one for a baby shower gift, so I thought I totally had this covered.  Saturday I checked the new carseat package: minimum 30 lbs.  We are quite a ways from there, but the old bucket seems too small.  As I was lamenting the cost of an intermediate forward-facing seat, I decided a good ol' Google search couldn't hurt.  Here's what I found: car-safety.org.  It's a whole website dedicated to alleviating carseat drama to help keep kids safe.  Here's what they say about the height issue (from the Carseat FAQ): 

...[R]ear-facing children in an infant seat or rear-facing convertible seat are too tall if the top of their head is within one inch of the top of the seat shell. It may also be an inconvenience if they are tall enough to kick the seat back of your car, but this is not unsafe. A child is too tall for a forward-facing harnessed carseat if their shoulders are taller than the highest slots, or if the top of their ears are above the top of the carseat shell.
 

That's pretty rad news for our baby budget: Lamb still has adequate head room.  I'm not sure we'll make it to the 30-pound-mark before he is too tall, but I don't think we need to shell out for a new seat just yet.

When we do get there, any recommendations for a forward-facing model? 

Image from: parenting fails.com