Hello!
Really, nothing complicated.
I have the necessary skills (in particular, I have extensive experience in shell scripts development).
I will do everything as you need.
I'll be very grateful, if you choose my bid.
And I think, need make installation through creation deb package (but this I will do on last stage).
Also, I can provide system for testing. Besides, if you want, I can create some auxiliary utility: for create/delete username, change the password.