very nice and congrats randy. wsir can be one helluva scary track that does allow you to carry some crazy speeds... theres some changes i would make to your line but i don't think you are ready for it yet...
like alanl stated, more seat time. you may get the theory in your head but that does you no good if you can't perform the car control technique as neccessary.
i would disagree that autox is safer then big track. the difference is its much harder to go to dangerous speeds/grip levels at autox and much easier to at the big track. but you can crunch a car and get hurt at either event. you do seem to have the correct priority down tho, to return as safe as you arrived. as long as you have that in the back of your head and SLOWLY increase the speeds as you get more skilled, you will stay safe as long as no one else crashes into you