I think it looks fine. I would swap the ring for a ring swivel but otherwise it should be presented ok.
The chod is a viable option, but I have experienced the chod to be completely ineffective on some silty waters. Although the rig is presented where the carp can always take it, a pop up can be above where the fish are feeding. Remember on particularly silty waters the carp are used to feeding deep into the silt to find food, a pop up on top of the silt is just not where they're used to feeding and can be counter productive. Last winter I did a lot of my fishing on Walthamstow 2 and 3, the bottom is almost entirely silt and I went straight in with chod rigs. I fished bright single hookbaits and blanked four consecutive trips despite seeing signs of activity in front of me. I had a rethink and it was clear to me the fish preferred feeding deep in the silt and my chod rigs were presented above where they were feeding. I switched to bottom baits straight out the bag on a simple knotless knot rig using soft flurocarbon hooklinks, fished on a helicopter set up like yours. The next trip I caught three to 27lb+.