Sandra, we are thinking of using schoolhouse pendants and also have an open floor plan. If you feel like sharing I would love to see a photo of your kitchen/dining room with the lights you decided to use.

thoughts on any of these? https://www.potterybarn.com/products/pb-classic-metal-bell-rod-pendant/?pkey=cpendants&isx=0.0.4400 https://www.potterybarn.com/products/pb-classic-industrial-rod-pendant-ribbed-glass/?pkey=cindustrial-collection&isx=0.0.400 https://www.potterybarn.com/products/pb-classic-textured-glass-rod-pendant/?pkey=ctextured-glass-collection&isx=0.0.402

Let’s talk shape first. Entry light...assuming you mean for a foyer? Is it 1 or 2 story? Confined space or sprawling? So try to narrow down the size and shape first and then the style should fall into place.

IMO your DR fixture can be a stand alone onw since it is the star of the DR and does not need to go with the kichen lighting . As for the choice IMO way too early to go there. There is no way to clean a 10x10 island so you need a KD ASAP not your architect or cabinets sales person but an actual independant KD. First get that done then you at least know how many fixtures in the kitchen the DR you need to know your table size and where it will be placed then the electrician can do his job.