No name

Beth

So my husband and I still haven’t picked a name for this baby! Due in 6 weeks with our 4th baby and 2nd son. We’ve had all 3 of the other kids named before we knew what they were (youngest was team green but still had a name before half way). This one has throw us for a loop. Our girls are Molly and Melanie and our boy is Nathaniel. I’d like to have another N name but he hates the idea. I love the name Noah but he refuses to consider it. Meanwhile he came up with Theodore (nickname would be Teddy) but I’m not really liking it. We like older more traditional names. Today he was looking online for names and came up with Carson. I kind of like it but not 100% sure. Do you think Carson John sounds okay? Is it too modern?