Wy on earth someone would go to your village if the person has his belongings and root in some other part of Nepal? If those retirees get somewhere around 500 bucks as pension (from their relative or childrens), they can afford lavish life and a private nurse in any part of Nepal.
Moreover they can brag to their childhood pals and neighbours "hamro chora le esto garcha chori le usto garche".

Your business proposal has very limited prospective customers. I'd opt out of this.