Congratulations! Lookin' good.
Sorry, haven't been following your progress, but looks like you got some good advice and encouragement along the way.
If you haven't done so, you need to check out the operation of the disconnector and safety, before you go to the range.
(Am I being redundant? Did somebody else cover this?)
Making sure the chamber is empty. Cock the hammer (cycle the charging handle). Pull AND HOLD the trigger back, dry-firing the weapon. KEEPING THE TRIGGER BACK cycle the bolt and re-cock the hammer again. THEN RELEASE the trigger and then dry-fire again. IF the disconnector worked the second dry firing should work. If however the disconnector failed, the the hammer will not stay cocked but will ride the bolt home. Repeat this a number of times to insure yourself it works.
And of course, cock the hammer, put on the safety and make sure you can not pull the trigger. Cycle the safety a number of times testing its function.
Have fun at the range. Targets porn is good.