Will the whole uvs be on one map? or this is a temp texture?

Temporary. There will be multiple maps, but I don't know how to make those in UVLayout, so I'll do it later in Wings. At the moment I'm thinking one map for the body and limbs, one for the head, one for eyes, lashes and brows, and one for the inner mouth and teeth. That last one might go on the head map though if there's room.

Will you stitch the chest with the torso & feet with legs?

I haven't found a good way yet to stitch the feet to the legs. But I'll keep trying and maybe look at some existing mappings to see how people did it.

The cut below the breasts is fairly new. I used to have that in one piece, but that would lead to some extreme texture stretching around the nipples. My feeling is that the extra seam shouldn't hurt too much, as most of it is in a crease anyway. UVLayout is very good at minimizing distortions, so the seams should align really well.

*Genital should blend with the skin texture because making those bigger will create the different pattern aspect issue that is mentioned before

Again, the seam should align well. Her crotch got in the way of the legs, which is why I cut it off. Thanks for the tip with the exact scale factors. First I thought I'd keep the head at the same scale as the body to avoid problems at the seam, but your approach is better.

I like the Apollo idea that back of the head belongs on the body map while face texture (and ears) is separate only for the front of the head, this gives much better texture-economy while if needed extreme details for face can be done with a smaller texture without spoiling resolution for the most times useless back of the head

Sounds like a good idea. I'll try that.

By the way: the colors in the layout indicate the texture distortion. Red means stretch, blue means squeeze, green no distortion. The more intense the red or blue, the worse the distortion. I'm trying to go mostly green with only faint reds or blues.

-- I'm not mad at you, just Westphalian.