Ugh I'm nervous, haha! Tell me that gets better.
It gets so much better. It really does. I still sometimes get a twinge of nerves with Gusto - he's so new to it. But honestly, I don't stress at all with Meg, and haven't in a long time. The fact is, things will go wrong. Sometimes terribly. Meg pooped in the ring. She peed in the ring. She's refused her weaves, she's popped out at the 10th pole. She's flown over her contacts and had once spectacular run where she was going so fast, she launched herself straight over the table as I screamed "LIE DOWN" and landed in a down pretty much on the judge's feet on the far side of the table. She was so scared about a chute that had a church and steeple as the 'barrel' entrance that she ran around it multiple times and finally jumped up and stood on the roof. In the biggest class of the trial. And you know what? We survived. Nobody cared. Everyone has had their own dogs fall apart in the ring at one point. There is nothing your dogs can do that hasn't been done. Even Mia
Not only does nobody care - nobody is going to remember. That's another big thing. It will seem like all eyes are upon you, but really, people are thinking about their run, chatting with their friends, and maybe going "look at that cute Pap!". If they notice your run at all, they will likely forget it within 20 minutes.
My favorite judge for "first trials" makes a point to ask who is at their first trial during briefing, and says something along the lines of "I'll let you in on a secret. By tomorrow, nobody is going to remember who was second in jumpers, but everyone is going to remember who was an a$$ to their dog." Go out, relax. If you get a couple of obstacles, or a great start line, or a full course, you win.
Looking at the schedule for what I assume is the trial you are entering (am I a creepy stalker?), I'd enter my baby dog in Gamblers and Jumpers. I seriously can not do one run a day. If my dog goes out and can't get off the start line (yup, happened to us at Gusto's first outdoor trial - nobody remembers but me), I don't want to feel like that's my whole day. I want to see what falls apart, then come up with a plan to at least improve one thing (I didn't ask for a stay next class, just restrained him with a hand and did a running start, and got him going with me).
The schedule is great as long as you don't mind being there all day. You can run gamblers first. Like you said, pick a course that will cater to what your dogs *love*. Don't even worry about the gamble. Find a short flowing course that would be too easy for your dogs in training class. I might even go in saying "no matter what, we aren't trying the gamble". Run your short course. If your dogs are running with you but miss a jump or make a mistake, keep running. Don't fix things yet. Let them learn "we go in the ring and run and everything is positive and happy and then there are cookies!".
See what you've got. Now you have a few hours before jumpers. Walk them before putting them away. Work a couple of classes so you can see that yes, other dogs make mistakes. Figure out what was great about your first run, and what you'd like to improve. Make a plan for jumpers. Maybe you need to change your warm-up (was your dog too up? Too down?) or your start line (see anecdote above). Maybe the ring crew or judge was too distracting for your dog, and this round, if they start to stare or go over, but turn back to you, you need to mark that with a verbal reward marker and run out of the ring cheering for them and go straight to the cookies.
Above all, remember that your goal is to 1) Get that first trial under your belt and their collars (not literally, don't run in your collars). 2) Teach them that running with you is So. Much. Fun. 3) Don't be an a$$ to your dogs (I can't imagine it). Make sure that when you snuggle with them that night, you have at least one thing you can tell them that made you so proud, and that you don't have anything you feel you need to apologize for (am I the only one that has those conversations with my dogs in bed?).
Seriously. Go for it. Video. Share with us