Sadhu for the generosity of share of what Nyom may wish to do. How ever suggesting, "slowly, slowly, step by Step" and metta and Sila alway putting higher as buildings or products, as this has more benefit and without Sila, not only life is short, but also the destination after being fast cut off ones beloved objects, metta and Sila last uncountable longer, even Angkor Wat. So may this the focus for all of you, taking the object just as object to train to do one's thing pure and unblameable, Nyom
Vithou and yes, doing really useful is a large challenge but needs much lesser till no paccaya but faith into Kamma and that the Buddhas way with a secure aim starts with Sila, based on metta for oneself at first place and all, even the very small, beings incl. plants as well. No change to buy one out and on the track in other way, even the Devas here would quick block one and reject support. Without putting Silas always higher, is hard to get any approve or support here and things are bound to quick flow back the hill running into the ordinary fields of flat land. So it's really expensive here, althought not much material needed but the sacrify of ones capability of metta, Sila.
Good also to look for those with skills and virte to do and manage of each part. Some are manager, some are good in right working in areas of money and trade, some are good and can keep precepts in things like to carry sand without hurting oneself or other and good to stay in charge and avaliable in what one is by himself skilled in doing it good without harm and violations for all.
Anyway, it actually had already began a little in that way and my person trusts that such was fine for all to have a small trace to follow.
Of course some days of doing on field by one self, has also countless more benefit as one might remember how hard the paccaya one easy might order others hardships, are gained.
Good also to let friends and family on field even, take part on merits and drink merits instead of heedless making drinks while a time in nature keeping precepts and carry some sand.
Maybe it's good to ask Bhante Indanano also at first place, to get approve and support from the Sangha if such is welcome, and good and get someone helping in good placing such great sarifies' requests.
Mudita
* Johann : just corious of who is/might be Nyom Youi? A typos?