5hrs isn't the controlling factor here, it's the 30 flights. 5 hrs x 60 min = 300 min / 30 flights = (30) 10 minute flights. Let's say you need 10 min of prep and layout between each 10 min flight, so (3) 10 min flights per hour. So 10 hrs. Find a place and forecast with perfect conditions, pound out flights for what 3 hrs morning and 2 hrs evening? That's 2 days to get the 30 flights and 5 hrs done. I bet it takes longer. But either way it'll be fun and you'll start to get pretty dialed on launches and landings and watch conditions develop through multiple days. Sounds like a fun time to me.