The communities you mentioned are in Apex,but command top dollar since for all real estate purposes it is Cary and share the new elementary school with W Cary.The new White Oak elementary is the base school for this area and should be a 10/10 school soon.This is one of the most upscale and best locations with desi population in the Triangle. I see that you are looking for a basement.
Based on my research, it is hard to find lots with basements in the triangle due to the type of soil here. The basement lots sell at a very high premium here in the triangle whether they are finished/unfinished and get sold first. If you are particular about direction then it makes it even more difficult to get a good lot.
Toll brothers is supposedly a premium builder (not custom) and prices are much higher than the regular national tract Lennar,Pulte,Standard Pacific,etc, in areas like Washington D.C. But here in the Triangle they are pricing competitively with Lennar, Pulte (around 10-$15k more)
Walkout basements are definitely better than in ground or walk up basements. I believe all the walk out basement lots are sold out in the Pines at Wake Crossing community. If you don't feel like shelling out an additional 10-15k you can always go with Standard Pacific. Standard pacific builds very fast in this area but has very tiny lots in Crestmont Classic plans - which are priced quite high for what they offer (fake tray ceilings, 8 ft ceilings on second floor etc).Based on the current market trends, the real estate market continues its upward trend in the triangle inspite of higher interest rates due to rapid influx of people from other parts of the country and very low inventory of old homes in good locations.
Bottomline - even 650k might not be able to fetch you a new home in the west cary/apex area (green level church rd) with a good lot size/walk out basement.For that price point you would be better off looking at resales in that location or at other newsubdivisions in apex.