Something a bit less substantive: Fingers crossed for you, it will work out! If necessary, do it on your own. It is still important to keep looking for solutions and to look ahead, just as you are doing now!
We have just received initial quotes for the interior finishing (153sqm) Heat pump heating with underfloor heating, sanitary facilities approx. 70k Painting work approx. 20k Electrician approx. 24k Then we still need the floor coverings and no idea what else will come. Calculated down to the smaller house, I would say that under 100k could be difficult.