Serama eggs - hard to tell the "pointy side"

(First time chicken peep) I just received about 12 Serama eggs in the mail. I unwrapped them to put them into an egg crate until the incubator gets here on Saturday (shipment was delayed) I found it tricky to determine which was the point side to face down. They were pretty oval all around. I tried to put them the same way they were in the shipping box. Any way other than by sight to determine this?
Also, I had them in an airconditioned room (on high) overnight but the thermometer was showing it at 70 degrees. So, I put them in the frig and turn the frig dial down (its old and doesn't get too cold anyway.) The incubator isn't coming until Saturday. Should I put them right in or set it up and let it run overnight and then put them in on Sunday? Any thoughts will be appreciated.

 

I now have them in a closed room with the air on high. They were freshly picked and shipped to arrive Wednesday ( June 13th) the incubator will be here tomorrow. I think I will turn it on and give it a few hrs before placing the eggs in. Thank you for replying. Much appreciated.