Looks good, Chris. I Iike how this model incorporates the bend of the deck, mine doesn't, (I tried, something prevented it, ha, can't remember what). The wales look fine, remember when doing the lids, they'll match the wale as they do when closed.
As to painting, I've worked as an airbrush artist, (also in oils), and see ship modelers going that way. While the way to go for plastic, cars etc., really no need on wood. With the taping, preping the airbrush, masking, going back to cover overspray, thoroughly cleaning the airbrush, touching up, not such a great time saver. You can get great results with a quality brush & paint, (I use enamel, levels itself out). If you hand paint the liners red, (can you not paint them before you install them on the Caldercraft?), it's easy to now paint around them in black, inside ochre, & less taping, (using only enough paint to cover at the tape line to prevent seepage). It's more of a challenge to neatly paint the liners doing that last, better to paint outside in. For the hull ochre, you can spot them in, mark & tape, then black above & below the masking. Of course, we all have our ways.
Ah, forget my question, just saw you've started with the liners, maybe for the rest, paint & install them after the black & ochre?