...one could always contact Lloyd's about insurance, but the service might end up costing more than the DAC in discussion....
Interest in that $ level would obviously infer you've got the means to make to make it stand and deliver, or go home.
I don't hate you for that. ;)
I'd have a few conversations to get any or all of the above concerns moot, and joust onward. Oh, and get it all on paper and Read it.
Next step, win the Lotto...*L*