I was reading your posts and I have a couple of questions. One is why the the flat tappet cam? I roller cam will make more manifold vacuum for street use and more power. The other question I have yet to see any motor with over 11 to 1 scr that doesn't ping on the street. It will run on premium, but it will beat itself to death under load. As far as cam advancement anything more than 4 degrees will start to cause other issues. I have been building stroker Mopar engines for over 20 years and have seen a lot of issues that were caused and what had to be done to correct them. Now if you are going to just race it the combination looks decent, but you are leaving some on the table with a flat tappet cam.
As far as Woodburn I have been attending for over 25 years every year. I do not do car shows, but I do race my 68 Dart every chance I get with a 340, with mufflers, DOT rear tire at 10:30's 128 mph and it is still street legal. But with 13.5 scr and 114 fuel I do not drive around on the street much.