I'm going to ask - why don't you like the camber bolts - you've already reamed out the top hole, you're considering reaming out the bottom - in my opinion you'd be better off with the camber bolts than the way it is now.
The results you achieve with camber bolts is pretty much the same as you do with reamed out holes - you're tilting the knuckle relative to the strut - the biggest difference is that the camber bolt has a cam action that makes adjusting the camber a heck of a lot easier.
Without camber bolts, the adjustment process is slacken the bolt(s) bump the knuckle in or out, a little a time, and if you go too far, reverse the process - tedious & time consuming - there's also very little to stop the adjustment from shifting under impact.
With camber bolts, the adjustment is simpler - you hold the bolt head with one wrench, slacken the nut and then rotate the bolt as needed - quite precise - and the knuckle remains in contact with the cam, making it a lot less likely to shift under impact.