I do other woodwork, and never buy less than a quart of PVA at a time, it is really cheap that way. It lasts for years, providing you keep it in a closed bottle or tub. I just fill up old glue bottles from the tub. I have used Gorrila glue, but to be honest, it is probably overkill, as a PVA glue joint (on the long grain) is stronger than the original wood (as mentioned above). On end grain, I will reinforce with splines or biscuits.
Clamping does not need a lot of pressure, but screw clamps would help the glue get into the fibers. The other important thing is a smooth finish on both pieces. I guess if the surfaces are rough then Gorilla glue will come into its own as the slight foaming would reach into all of the crevices.
The grab time for PVA is 5 mins, and it goes off in 30 mins, fully dry in 24 hours. One good thing about PVA is that it is water soluble. You can wipe off excess with a wet rag, and you can extend grab time by 5 mins if you add 5% water.
Sorry if I am teaching anyone how to suck eggs.