X2 on the crushed concrete or crushed Asphalt. I don't know what there is up in your area but Woodinville has a big concrete and asphalt recycle place, I can roll out of there with 4-5 tons of crushed whatever I want for $20, vs $20-$30 /ton for 5/8 or similar from Cadman (contractor price). I know its cheaper at the quarry then Cadman's Redmond yard, especially with a hook up, but its hard to beat the recycled stuff.
I like the "2-4" concrete as a base course if I have a nasty area, then a layer of 1-1/4" concrete to fill in the voids. The 1-1/4" crushed asphalt makes a really nice top layer and in a year it fades out a little to look just like gravel.
Either way, like Kev said, put down a thick layer of the bigger stuff, then top it off with 1-1/4" minus or similar to fill in it. Buy, Steal or Rent a compactor to get a good set on it, or better yet if its a large area at once, rent a small roller and go to down on it.
Welcome to having property you give a damn about, there is ALWAYS something to do and/or spend money on..... Wait till you start house projects.......................