Set up a hatchery, with preserving boxes, vessels, and refridgerators. Be prepared with plenty of tranq arrows, and preferably a mc or acendant crossbow, also set alarms on your phone so you can keep up with imprinting.
I got a level 150 lightning egg and I was so excited to hatch the egg...that when I went to put the egg down I accidentally ate it instead. :( ps4 users: R2 ISN'T GONNA DROP THE EGG YOU'RE GONNA EAT IT LIKE ANY OTHER EGG. REMEMBER THIS. LOGIC BEFORE EXCITMENT.