i no nothing of your capabilities with NV gear, so please dont get offended by this, a design without a working model is nothing more than a picture/idea etc
putting something together thats actually usable is a whole different ball game. a working model wouldn't cost a great deal other than parts and labour if you have access to the right equipment. try and get something botched together and see if it works, if you need a hand with anything drop me a PM.
if you willing to sign a confidentially agreement i'll have a chat abut it. obviously it would be 1000% better to have a working mod