Congrats on your first king, he's a beauty. They're great snakes to keep and pretty voracious feeders. My kings will usually prowl their tanks in feed mode for 30-60 minutes after they've eaten. After that they'll retire to their warm hides for 2-3 days to digest their meal. Midas definitely looks like he can handle a small hopper. It can't hurt to try. I generally feed my young kings approximately 10-15% of their body weight every 5-7 days. Best wishes with your new addition.