I am also wondering is 1% enough for an earnest money deposit

I believe the way you stated it as a secured deposition with some profit is exactly what is intended.

Then he have his worker handed me a banch of receipts and an invoice for $25k( was asking for $12k).he basically ignore all the payment I made to him in the pass on this invoice(one check for deposit which not on the contract but he asked for it and one check was made for advanced payment for him to pay material which not on the payment schedule too), plus he claimed completion of some items which not completed into the invoice.

If it came down to it I could show my monthly deposits in my bank account but what do you guys think?

The higher end the neighborhood, the larger the deposit you take.

He did tell me what the rents were and I got pro-rated rents and security deposits when I closed.

I don't think you can even require pet deposits of service animals-- I might be wrong though.

Because we own the park as well, we are getting the space rent and a deposit on the park.

What about obtaining the deposits the PM has received?

Assuming your rents are market rate which you always have to question coming from a seller (they could have given waiver of security deposit or first months rent free or half off or have a free month of rent at the end of the lease or middle of the lease etc.)