[ooxteme]

1 - Quick GPS
2 - I use the app that is cooked into my Energy Rom but IIRC its tom wifi tether or something like that
3 - start settings/sounds&notifications/then scroll down to incoming text and then select a ringer
4 - Yes and No but totally up too you. The custom roms all have their own tweaks/advantages to be make your phone more custom to your likings