A lot of people may opt out of the new school because of the delay but the lower grades are rather full. I think there were supposed to be (3) third grade classes for the coming school year.
With regards to the old glen neighborhood, I know some families in there and they love the subdivision but to evolusd’s point on the power lines, all of the subdivisions on that side are very close and that could impact your resale, your view and hopefully not your health.
The park mentioned is way better than it used to be so that is a nice feature to have in close proximity. You could walk your kids over to brightwood and walk them down the path to school if you go to SEES and SEMS.