Why you didn't start making cheap coins that you could afford to invest? If I'm not wrong, this is your first coin and users are worried about the quality because they never saw any coin produced from you. In my opinion starting with a silver coin isn't the best option, if the mint don't made a good work you will loose money with this.
If you look closely at my OP, you will see it says these coins will be stamped, , there will be no mint. These will be rough looking coins I would assume, and are going to be made like ancient greek coins where. Each one will be a little different
I wonder if any other coin makers have stamped their coins vs using a mint. There's a risk these coins will be very handmade looking and a lot of unhappy customers expecting something else. Perhaps you should show a finished product before asking for payment, even if using escrow.
Why not use a mint and charge more to recover your costs?