Part of the reason I'd try to meet up ASAP with a women I met online.Texting is cool after you've talked to them and you're just exchanging pleasantries throughout the day. Actual long conversations are a no no through texts.
If I were to meet them in person, I guess it would change in that I would go out with them sooner. Probably within a couple of weeks of first meeting them and after talking on the phone a few times. It changes because the way we met is more "normal" and I know what the person actually looks like versus a picture. Ususlly the attraction is higher during a face to face meeting versus seeing a pic online and thus i would probably want to see them sooner.
I guess I'm not understanding why you wouldn't want to get to that sooner than later. What are you really accomplishing by these extended phone relationships? Why would you not want to meet up ASAP to see if this is someone you could be into?