Chiseled text - how to go from 2d quads to raised center

UPDATED: linked a new .blend with references packed. My apologies!

I'm very new to modeling, and I need to try to recreate a particular V (a client's logo, the Photoshop fake 3d chisel look), getting as close a match as I can.

I've googled many tuts on doing chiseled text in Blender. Two examples:

a popular one from here

and one on manually topologizing text

I have roughed out the 2d topology for the V, but I don't know if I've thought it out correctly (the top caps probably won't deform right), but Blender can simple subdiv, so the edge flow seems to kinda work?

Two questions:

1 - There are reference images in the attached Blender file. Have I got the basic shapes down for this to deform the way the reference image appears to?

2 - If I use this method, how would I go about raising the center? I've done a hard-chisel version by raising the center line on a simpler topology (below), but it's not quads, and I don't know how to umm...puff out the sides to get the rounded look of the reference.

I've tried proportional move, but either it's too complex a shape, or I don't understand the options well enough...the vertices are not equidistant, so I get odd bulges at the irregular areas. Part of it is my rough modeling, but...

Any help on either aspect of the question is appreciated.