Welcome. Our all purpose flour in the north is different than the south's, that's why your biscuits don't work. (you'll find out soon enough, if applicable to you). Try a talyor ham/egg/cheese sandwich; Sam AM & SCRAM both have owners with southern roots that influence the menus.

The shoprite in JC is the worst shoprite. Knowing that going in is power.

You can lightrail/drive to the hoboken shoprite or Trader Joe's.

There is a Whole Foods dropping in sometime in the next decade by St Peters. P&K is a good green grocer, sometimes Target has good grocery deals. 99 Ranch can work for many things & is walkable.

I do most of my shopping in the suburbs for the best price & selection, so if you have a car this may be a way to go depending on your needs.