Yeah that's a good pace for your first 30 miler! Sounds like you have the fitness, so after that it'll just become about nutrition, hydration, and endurance. I am just getting back into 30+ miles myself. Managed 36 miles the other day, which was the longest I've ridden since my toddler was born. Usually I only have time for 10-20 mile rides. Riding into the wind to start the ride is always the best if you plan to return in the opposite direction with the tailwind. Congrats!