Excellent ride reports Casey. It's refreshing for us long time riders to hear about a new riders experiences.
You have received some great advice in the previous posts and I'd like to add my 2 cents worth.
Once you are off the pavement, the majority of riding situations can be conquered more easily and safely by standing up.
But standing by itself will not necessarily help. You must learn to shift your weight properly, based on the terrain and the actions of the bike.
Try watching some off road riding and/or racing.
Generally the more body movement of the rider, the better control they have over the bike.
Once you become comfortable with the clutch and throttle coordination, try some standing figure 8's. Start out with wider ones and work up to tighter ones.
You could even do this in your front yard.
Keep posting the great pics and stories and let us know how you progress.