Hi Robert,
You will not regret making the journey to Bill's. He usually has quite a few different varieties and he can be helpful recommending the right plant for your zone. If you want a suggestion, Bill has a Negronne that I really like. Ive been growing it for about 5 years and it is a delicious fig that would do well in a pot for you in Newark.
He usually has a list of the plants he grows, and also sells both 1 year and 2 year old plants. You can save some money on a 1 year old, and it will grow quite quickly. The 2 year olds are bigger, and hard to resist when you see one.
I have only used the larger pot as a SIP. Ive had tremendous success with it. If you can handle the larger pot, go for it. Keep in mind that you will have to move and store it in the winter. Those pots with mushroom compost are very heavy. They need a dolly and some brute strength to get around. If the smaller pot is more manageable, go for that but keep in mind that you will be root pruning at least every other year.
Good luck and enjoy your trip to a most amazing fig farm with a most legendary fig man