We have a storage issue in the state of NJ. We're here 6-7 months in FlL (since Nov). How do we find an attorney that practices in BOTH NJ AND FL?

We rent 5 Storage units in NJ. We had a Med issue before last Nov. We've been catching up& working it down to $1,100 at about $300 a week (the last 2 payments) and 2 more at $300 (until March 4th) then mgr said pmts will be less. Simultaneously mgr has been threatening to sell ALL our belongings if we don't sign something that says he can sell them. We also can't verify the bill. Doesn't want us to talk to lawyer. He says he will sell our 5 units by March 1st if we don't sign. We don't know our rights. He promises not to sell, then reverses. Initially in Aug (2016) it was represented as different company.We lost our home in the housing crisis (misdiagnosed illness & hospitalized) & our items in storage are our lifelong memories, heirlooms & history. It's as though mgr is more interested in selling our possessions than us keeping up with these pmts. We need an attorney that practices in both states NJ/FL.The monthly pmt is approx $750.How does one find a dual state lawyer? We are in FL.