Good on you spending time with your son working on a model. Many of us, myself included, started in the hobby that way. Let me suggest you go to the video section and look for Tim Kidwell's series modeling with his daughter SuSu. She is younger than your son, but much of what Tim says & does is transferable to a younger modeler. Most of all make it fun. Decide early that it is his boat and it will be run across the rug. Breaks happen, inaccuracy happens, YOU live with it.
I would stay away from CA with a youth builder - or you handle it. In our club's Make-n-Take sessions at airshows we use the old Testors red tube glue (easier to handle in a crowd) and back it up with a limited amount of Tamiya Green Top liquid cement as needed. Its good and dries quickly and allows you to move forward, but you may need to handle it until your son demonstrates sufficient manual dexterity (Sorry Dad, that may be a long while coming - my son was still a klutz through high school 
)
As far as paint Art Braunschweig at titanicmodel.net has a paint sheet with mixes and recommendations.
paint_list_scale_equivalents.pdf (titanicmodel.net)
Many of his paint mixes use paints which are now out of production. Floquil is gone, ModelMaster has been decimated, Tamiya - there is no out of the bottle solution for many. Let me recommend ScaleColor
SC997- RMS Titanic Tech Set – 1/200 Scale – Scalecolors.com
ScaleColor is an acrylic paint in dropper-style bottles. The company is run by Jeff Herne, former editor of this here FSM rag and part of the old paint color mafia.