Looks like some good lambs!
A few thoughts for you to consider:
Hay is never wasted. You're feeding your soil for better grass growth with what is trampled or left behind. It's probably cheaper and better than organic fertilizer options. We probably lose up to 25% of round bales to pasture fertilization by bale grazing our cows. I happily pay that for future soil production, which equals more grazing days later.
Holding lambs until June harvest will always pay off to your advantage. The extra hay cost gets returned about 3-4x the last time I did my math on it. You'll also have extra head to help consume the extra spring growth. The heavier carcass weights at 12-14 months is also desired among many customers we found. And meat quality is always highest when animals are on good quality grass, gaining weight.
Net wrapped bales if you can find them, stored on pallets or logs. I can imagine managing those tarps is no fun.


