24x32 Cape Cod House Floorplan

Hello. I'm building a 24'x32' 1.5 story Cape Cod style house in Maine. We are designing and building the house entirely ourselves except for the helical pier foundation. My goals for the house are: 1. Mud room or entry space with storage for coats/boots 2. Cathedral ceiling above kitchen and living room with exposed rafter ties 3. Loft above bedroom and bathroom for guest bed and small exercise space 4. Bathroom accessible to guests (bathroom layout needs lots of help) 5. Decent kitchen countertop space 6. Pantry/laundry/pseudo root cellar conditioned by a heat pump water heater 7. Small wood burning stove 8. Keep plumbing runs to a minimum 9. Keep costs low

I've never designed a floorplan before. Please share your thoughts on my current plan and how I can improve.