I think the table I had was a 38-and fit fine in the space where a 2 seat dinette was built in-I removed the old and redid the floor in the entire trailer.
Anyhow-I think the 42" should be fine-and you'll be able to jam 5 or 6 chairs around it when its pouring out!
The table I had was the 'dual drop' listed under the link you posted when I looked it up. The chairs look nice that come with yours and not too big-that is key in the RV-finding stuff that's not too big. I bought my table in Kmart I think years ago-and had found chairs that folded(like the ones that come in motorhomes for expanding the dining table)
I'd take a shot and keep what you found-I don't know if you'll find anything better?
