I know landings are visual whenever possible, and Class Alpha is IFR only, but I was just wondering if pilots (or their dispatchers or what have you) make their flight plans all IFR since many flights will spend a great deal of time in Alpha, or if it's not much harder to file VFR-IFR-VFR (unless there's weather, of course). I haven't learned much about IFR flight plans just yet, and I didn't feel like waiting until I start my instrument training.