[chrismorse]

If the soil is acidic, don't use metal.
If the soil is rocky - sharp edged, like occasional gravel, go with the tougher schedule 80 PVC, and/or bed in sand, (pita).
Depending on the pressure and the height of house above the meter, you may also want to go with Sch 80.
I would go with 1 inch, because of the length, place the pressure reducer at the meter, to reduce the stress on the line, not at the house.

I like to debur the cut edge or end, so the sharp corner doesn't scrape the glue off of the interior of the fitting/bell.. I also like to use a 220-150 grit paper to scuff the fitting and thepipe end before using the cleaner. I've not seen anything to validate it, but i feel that a bit more prep yields a more secure joint.

Draw a carefull, dimensioned map of the pipe location. If you ever have a leak, high water use, or want to tie into the line it is very nice to not have to drive around, digging exploratory holes looking for the pipe.

If you go with PVC, use small pots of glue and primer, have back up supply. for some inexplicable reason, bigger cans of goop always get knocked over fairly quickly.

regards,
chris