Deli cups will be just fine, for sure. Put good consideration into breeding G. Roseas before doing so; they are hard to sell due to how abundant they are in the hobby. They are great (weird) spiders, for sure.

I am not sure about the protocol here on posting links to other forums. I do have two that I would like to suggest to you specifically focusing on the joy of owning tarantulas... PM me I guess and I will give you the links!