Abra1d I agree there is a massive problem with services infrastructure but it becomes self perpetuating (especially with privatisation of transport which shuts down 'non economic' routes).
My brother's village has a similar sized development going on at the moment (which is why I question the acreage - plots seem much larger than modern standard even with 18 units). Prices have been inflated by people retiring there from cities and people commuting to nearby towns who are often the most vociferous opponents of new development and who don't rely on the in-village services.
Children growing up have no hope of living nearer to their families even with their own transport due to inflated house prices. This leaves their aging parents without a local support net and gradually breaks down the local community. His village isn't doing too badly - its popular and has a very committed younger/middle generation working for it which is bringing services in. Other local villages have turned into dormitory villages.