Transformation tiny oiffice on wheels in a smart tiny house

We build with our factory in Romania a tiny office airstream style for a danish company who cancel the contract because ukraina/russian war,now we must sale that tiny office but not easy in our country. We want to find a smart designer who will add a shower,a smart inside organization to transform that nice tiny office in a award interior design tiny house for a fancy couple who want something special,totally off grid. Somebody take that challenge?
We need design and execution drwaws,ideally interior rendering in order to sale it before transformation on a 3 D presentation basis. Thank you. Have a nice evening!