For now I only have an estimate of the cost in cement, which would be $270 per 250m².
Grateful that we already have the permit, we start the construction plans and cost details while we get an exact list of materials that we can get at low cost in recycling places.
On the other hand, writing a proposal in request to help for the computer would be around 250$ for that, imagine those HD desing and all the Windows opened with it ⚡🔥