MacKenzie and Henry, what a professional looking snowcave. You look like you were very careful packing the snow in it. It looks tight and compact like it should be. It also looks safe enough to sleep the night in, well done.
I do believe that if you created a door to keep out the wind and grabbed a sleeping bag you would be able to live in this snow cave... I wonder if you lit a small fire inside would it melt or survive like an Igloo?