Kind, you can keep the chia and goji in the bags that they come in. Just be sure they are tightly sealed.
I'm not quite sure I understand your question about chia seeds vs. the gel. If you are using 1 Tbsp to make a gel, then it will be the same caloric content if you mix it with water. However, it expands as the seeds absorb the water to you will end up with more volume if it is in the gel form. Also, if you use another liquid like almond milk, then the calories in that should be accounted for as well.
Goji berries are dried so when soaking in water, they will absorb water too and expand as they are rehydrated. Some of the soak water would be delicious as the flavors seep out into it, infusing it with a berry flavor :) Yum.