You'll be just fine going from 44.1 to 48KHz as long as you use a decent SRC.
Voxengo's excellent R8Brain Pro is my SRC of choice.
I would use Minimum Phase mode instead of Linear Phase mode to reduce the chance of a nasty ringing artefact in the high upper mids (Min Phase is the equivalent of hardware DAC/ADC process, and there will be no artefacts at all).
You would do better to record at 48KHz and avoid SRC completely though, but the downside here is your sample libraries might well be at 44.1, meaning they get SRC'd on the fly in your DAW which is definitely the worse of the 2 options.
24/96 on DVD-Video is pointless, as it is optionally supported & stands a high chance of automatic SRC on the fly at output, and also has a (lesser) chance of truncation to 16-bits. All that is actually mandatory on DVD-Video disc is 16/48.
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