Hey Jack
I would recommend against repotting your Venus Flytraps. They really don't like it.
There are things that will can can happen that will be harmful to the plant.
Shock, Death, damage to their roots...all things that can happen!
If you still feel the urge to repot, I would wait until after you pull the plants out of dormancy.
To put them dormant, gently remove them from their pots ( so the roots are not damaged) and place in a paper towel in a bag. Put in the front of your fridge.
When you pull them out for Spring. Pot them inwhatever you like.
Be sure to use plastic pots, if you want to use a clay pot, it need to have a glaze on it ( the minerals in the clay will hurt the plant )
If you are to keep them outside, use plastic, the clay will pull the water out of the soil on hot days, and you will have to constantly water.
Plastic is your friend! :smile: