Your only going to level one side so chock the other. There is NO REASON to chock all 4 tires. I have never used anything but good old plastic wheel chocks and here is what I do. Has worked for me for over 20 years.
level the trailer, use legos as you need. I then put the rear chock in, then back onto the chock slightly and have a helper put the front chock on to kinda load the axles. I then put the truck in neutral to take the pressure off the hitch then into park. This little maneuver locks the wheel chocks in and helps with motion.
Chris