Hi J.,
Your little boy is showing interest in solids, so if he was my kid, I would start feeding him solids. You don't have to start with cereal--there's no law on the books! You could start with pureed fruits, even just a mashed banana and see how it goes.
That being said, there is absolutely no harm in waiting. It is really your perogative. I started giving my son solids around 5 months. Most pediatricians these days say between 4-6 months, die hard breastfeeders will say wait for 1 year, and grandmas in their 70s would wonder why he wasn't eating solids a couple of months ago! You will get all kinds of "advice". If your gut tells you to wait until Thanksgiving, wait until Thanksgiving. Just take lots of photos of his first bite!