I'm running 1 1/4" Poly 300' from the meter to the house. The main arterials inside the house are 3/4" which is adequate due to the house being 1,300 sq. w/ 1 bathroom and no outdoor irrigation. My question is whether there is any benefit to transitioning the 1 1/4" Poly to 1" copper for the last 10' of the new pipe entering the home. I'll be installing 10' of copper through the foundation to maintain a ground. I'm not sure if I should get 3/4" copper or 1" copper. My gut tells me 1" copper and then reduce to 3/4" after the shut-off.