Replacing galvanized. Pipe sizing q.

I'm replacing some galvanized pipes in my house. I'll have to verify, but I believe my meter size is 5/8.

I have 3/4" PVC supply running the 30 or so feet from meter to house. Inside the house I have 3/4" gal which I'd like to replace.

I have 2 1/2 baths, and about 32 fixture units. Is there any reason to run 1" copper inside the house, or will 3/4" be sufficient before branching off? (i.e. to the softener and wh?)

I don't have plans for replacing the PVC yet. My first goals are to get rid of the badly corroded galv, install a softener, and new water heater.

Thanks in advance for the advice..

-Zach

1" inside the house is good for the cold until you branch out. One problem you might have if you use 3/4" for hot water inside the house is the length of time it takes to purge the cold water from the line and that is also a waste of water. You can normally run two items on 1/2" hot. Like a shower and a lav. You're OK to leave the PVC supply line. Terry has a good pipe sizing guide in a link off the the home page of this site.