Mini-me turns 1 in a couple weeks; the bike seat came in the mail last week. So amped.

I agree with pretty much everything above. Fatter tires, especially since the Steamroller can take them, and definitely lower gearing. Most babies of legal portaging age will effectively double the weight of your bike; i couldn't imagine pushing more than 65 GI. Front brake goes without saying.

I was going to go this route but then decided to build up a 1x7 townie as the minivan. Had i stayed with the FG, I probably would've gone with 42/18 or 19.

As for seats, this is what we got. Maiden voyage this weekend so I can't tell you how it feels riding it i thought it looked the safest. Only catch is you can't use drop bars. Even if you get another non-top-tube-mounted seat, i'd strongly recommend upright bars on the SR.

Pro tip: buy the helmet way in advance. Get the lil' one used to wearing a helmet before anything. Think about the first time you tried to put a sweater on your pet. Hilarity will ensue.

EDIT: Babies + helmets = this.