i think a lot of people are going to start "opting out" in the next few years. you will just be ahead of the crowd. i think you are on the right track.

probably just requires being a little ocd the first time out. as far as the milling just check, double check, then check again. go slow and take off a little at a time. when it's done you will has a lifetime of confidence in your ability. maybe even start looking at the 80% lowers... should be a very fulfilling project. worst case you have the resources in place for a rainy day.

always somthing to wish i had gotten into back when it was cheaper. and probably in five years i will be wishing i had gotten into unfinished lowers. but it comes down to making the chioce and taking steps to get it done. sounds like you are there. I'm hoping you go for it and keep us posted.