8 point roll bar

So a disclosure before I make this next statement is I am going to take every precaution to make the roll cage as safe as possible! But with that said I was talking to my friend last night who's duster is in the low 10's and he was telling me I don't have to get the rollbar certified until I'm under 10 seconds? Which means for the most part it won't be scrutinized? So my concerns are exactly where I want to make the main hoop connections and at which angles? I was hoping I wouldn't have to take out my firewall again and still be able to be more than 30% from vertical as the rules say. I am again trying to make this a legal roll bar and beyond safe. As I understand it to get down to 10 seconds I only need the main hoop - and a bar going by the drivers door? Of course I'm going to put all eight points down to the best of my ability. Please keep the pictures coming as everything gives me great ideas..... thank you!