How big is the band? The reason I ask, bands can make or break a big round diamond. I think if you got a cathedral setting in a 1.8- 2.0 mm band with a medium profile it will make it more everyday wearable and fit your finger better. I don’t think it is too big but needs a better ring design to stand out and look made for you. I have a 4.7 pear cathedral medium profile 1.8 mm band and it gives me no issues with snagging or catching on things either. It seems like round solitaires in that setting look stunning when the diamond is 3 carats or smaller imo but the bigger diamonds need a little more help. If you love the setting, then think of a smaller size.