Well you don't mention a few considerations.
First off, as others have mentioned - cost. How much will this cost you? To me, that would be a huge consideration. Is your work paying for it? I had a friend who did the trip to Europe as part of her MBA (she was single and had no kids) - and our company helped fund it most of it. She didn't really make any connections so much as she was able to put it on her resume and it was great experience.
As for leaving your son - that's your personal decision. My sister in law was able to leave her kids with my mom as early as a few months old because she had a huge career and it was just expected of her to travel right away. In some ways it was easier - there was no choice.
I left my kids to travel for work when they were about that age. For about 10 days. I was not overseas and could get back in a hurry if needs be (which was a consideration for me). I was leaving them in their own home with my husband though, and there was very little disruption to their lives. They went to daycare part time and were with my husband the rest of the time. Again, I had no choice. It was part of my job. I only did that one long trip. The rest were 2 nights tops.
I'd also want to be sure your mother can handle ten days. Some are able, some not so much. If you're comfortable and know you won't worry about her being exhausted and him being ok, then that would make it easier than if you have your concerns.
I'm not sure I've answered anything really - but those would be the factors I would consider.
Good luck :) Let us know what you decide.