It sounds like you'd be better off cutting these parts with a saw. Definitely those pine pieces and the base would be much faster to make with a table saw. A sliding miter saw might be best for the triangles, unless you're talking about cutting a triangle out of the inside of a piece of wood - that would be something you might use a CNC router for, although if that's all you're doing a regular plunge router used with a template would work just as well - or maybe better than the sub-$1000 CNC machines you're considering. For $1000, you should be able to get a fairly decent table saw, a plunge router, and a drill press, maybe a scroll saw as well.