Sounds like a good setup to me.
My initial words of advice:
1)
Always "stripe" or "black" your DV tapes before recording (that is, record them all the way through in VTR mode to lay timecode on the whole thing). FCP
hates timecode errors. Also, don't record anything of value on the first minute or so of a DV tape. This gives the camera enough "lead-in" time to properly capture your clips.
2)Record everything in SP mode.
3)Properly log all of your clips before you capture. Label your tapes consistently and enter that info in the logging process (under "Reel"). This makes it a lot easier to take a project back online if something goes awry (and it most likely will).
4)Keep all projects rigorously organized in a hierarchical folder system. Makes things
much easier to find and reconnect if links get broken, or if they "mysteriously" go offline or something.
5)I would suggest using the external drive
exclusively as a media drive. Just remember to check your scratch disks every time you start up FCP if you periodically connect or disconnect the external drive, because they will default back to the internal drive if FCP starts up w/o the external drive connected.
6)Speaking of checking settings, get into the (very good) habit of checking your settings every time you sit down to work on video. It makes you more familiar with your system, and makes you less likely to have a "WTF?"
There are quite a few good FCP websites out there; here are some (in no particular order):
Creative Cow
Ken Stone's Final Cut Pro
2-pop
LA Final Cut Pro User's Group
DV Knowledge Base
Final Cut Pro 411
HTH. Have fun!
MM