I just do sub assemblies based on what I can work on at the time...
IE: How I'd do the chest of the 1/144 Freedom I have now, I'd do the chest vents before placeing them in their spot and glueing the chest together to rid the seam. I'd have cut off the snaptogether points of the lower torso and put that together seprate, then after that's done, but the body parts together....
Just a small example though