Ireland and Scotland or Which?

My partner and I are planning our anniversary trip and we spent 2 weeks in England during our first international trip and now we are wanting to do a combo 2-ish week trip for Scotland and Ireland. We’re big foodies, he loves history, and I love scenery. Is it possible to do both or should we pick one? We always said do both since we’ll be out there anyway and thought might as well and were going to do roadtrip-esque since that’s what we do in the states. If not, which one?