They were some great salesmen and I forgot to bring my wallet so when I went to go sign up for the classI could not.

When I signed a new lease agreement with them, they told me that they wanted to sign a "life-time" lease, they want to live in the house forever. 

After a few deals when you know what youre doing, you will appreciate his help but will want 100% profits so dont get bound up in something you cant get out of (like signing your life away in a contract).

The property had been a quadplex for more that 50 years but can be easily transfered to a duplex or I can go through with a special use permit along with being granted a variance for parking because it's on a small corner lot.My question is that the planning department is requesting a lease to be signed by me. 

They were some great salesmen and I forgot to bring my wallet so when I went to go sign up for the classI could not.

Because most wholesalers move so much volume and most are a first come first served basis, they usually don't allow an inspection period after signing a contract in order to close quickly.

He won't sign the invoice until its paid in full (and I live across the state). 

You signed a legal binding contract that can not be ignored simply due to a personal decision where by you now do not wish to live in the building.

Well, it's noon and no sign of him and no response to text messages. 

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