Penny Floor - don't know if I would have the patience for a whole floor. but a coffee or patio table would be nice! Also an easier way to do it is to put out the pennies then flatten then by, I don't know, maybe a broom or some thing.
Add a full bath near the garage. Single Storey House Design, The Boston with Urban facade. A well laid out floor plan, the Boston was designed to fit a narrower block. 4 Bedrooms and study, and a walk in pantry.