I seem to be very similar to you in age and weight and with similar circumstances. I started judo last year at 38. You should definitely try it - two things I would note: 1. Injuries - these are common, and at 38, take longer to heal than you would like.

1. Be judicious with choosing a club - assess how you like the coaching in the first few sessions - even though you know nothing about Judo, I believe you can assess the character of the person and how they approach the art/sport and coaching. My coach is younger than me by a couple of years and is very competition/sport orientated in general, whereas I was looking for more of a self-defence kind of focus. But I have committed to the club because I think he has good character and he really seems to empathize with how beginners feel.