そうね、じゃ、これかこれね。このポケットは大きいから、たくさん入るわね。
Does これかこれね mean is it this or is it the other?
From my understanding the whole sentence meant something like - Because it has big pocket so I can put a lot of things inside. Correct me if I am wrong and thank you in advance
Does これかこれね mean is it this or is it the other?
Yes. か means or in this case.
アップルかバナナを食べよう → Let's eat apple or banana.
入れるわね
I don't know how to explain this わ. This is emphasis, emotion. Something like YEP, really a lot will go in.
For example
この家を自分で建てた → I built this house by myself
おおお、自分でできた？ やるわ！ → Wow, can you did it by yourself? You did it (you are cool, you are artisan)!
Maybe this helps.
First, there is a mistake in the sentence. It should read:
... たくさん入るはね。
If the sentence had been just ... たくさん入る。 then the translation would be "It has lots of pockets so a lot will go in." However the person is expressing some ambivalence in the way they are speaking. The first sentence is very hesitant: "Yes, well, it's this or that, isn't it." The same hesitancy is expressed in the second sentence by adding "はね". A better translation that gives this sense of hesitancy in English would be:
"I guess a lot will go in because it has so many pockets."
