For five hours from start, I'd say that's not bad.

If you're planning to distribute your textures you could pick up an inexpensive merchant resource - there are some around here for around $10 - and learn a bit more by pulling that apart and incorporating it into your work.

If you haven't already, you might want to invest in the Universal Texture Convertor from DAZ; more expensive, but worth it in the long run.

I say this because the V3/SP3 body is a nightmare to texture from scratch, and I've had some success in texturing a V1/2 body (easier) and converting it to V3. Conversely, I always find the V3 head easier than V1/V2.

Don't go overboard on the extra plugins, though; the ones to convert between V1/V2, V3 and M3 should be enough.

Hope this helps.