Seeing it's only your second year find buddy to go with as rock said. I even bring a second set of dry clothes and footwear. I am to big mess with thin ice I need 6 inches as rick said early varies so much so some where there is half as much ice.
Safety gear check include ice cleats as i have seen enough broken arms happen. Check your gear test the vexilar hook it up and turn it on to see if it runs or just hook up the charger. I use the drill plate so I charge all my batteries and with blade protecter on I make sure it works. My little sled is ready to haul my gear.
I go light during early ice so fill so fill up my plactics container and restock my jig boxes. Make sure my set ups have new line and pick my favorite set ups to take with. I can add some photos later
Lets say you have 1.5 ah batteries now and you drilled one and a half holes per battery.
Unless that ice was 50' thick, have dull blades and your auger is 8, or bigger that's not a drill you want to put more money into.
So give us some info on your auger and how many in lbs of torque is your drill?