Techs aren't really considered a good idea to carry over, since you'll more than likely just waste TP. Plus, what if you want to switch between Strike and Tech? =/ Now, Tech USAGE is a great idea. Same with Cooking Skills and, depending on what you want to do, either EX Gems you currently have or the ones you have on hand. Doing it in storage allows you to experiment with effects more as well as
Spoiler Below Using the EX Gem MAX you get from the final boss