I'd avoid the stereo panning. More often than not you'll want your bass to be mono. I go as far as to use a stereo widening plugin set to negative values to get it as tight through the stereo picture as possible without destroying the signal.
Additionally, if you're just starting out, I'd suggest using just one track (mic, or DI) and getting a good sound from that alone. Once you're comfortable with that, you can move up to multi tracking, which comes with its own set of advantages, and problems that you'll need to consider (carving each signal out to take advantage of its strengths, and leaving out its weaknesses, phase issues, etc.).
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