@Chow Ahmed as far as investor restrictions, some new construction has this to help maintain the community property value and often is in force for the 1st year. I know of very few existing (not new construction) communities that have these restrictions.
The area you are referencing, while a great one, is far too limiting IMO. While I realize you are targeting the radius right around RTP, I can tell you 1st hand that employees from the major corporations (IBM, Lenovo, Apple, Cisco, Pfizer, Biogen, etc) expand and are heavily concentrated in South Durham, all of Morrisville, all of Cary, Apex, Holly Springs, Fuquay Varina (yes, even the 'Quay") & North & West Raleigh. Chapel Hill also, but as an investor, I'm not a fan of their higher property tax. At the very least, as far as an upscale townhouse, I'd suggest adding S. Durham, Morrisville, and West Cary to your list. You will get as many UNC & Duke Residents & Fellows to apply in Durham for a July 1st occupancy as you will tech & pharma employees.
Price Compression: 2020 the rental sweet spot in the Triangle was between $1200-$1600. Since Jan of this year the number of out of state, sight unseen applications has been tremendous. I've had properties priced 20% over LY prices and received multiple out-of-state (NY, NJ, MA, CA) applications. So, while the sweet spot this year seems to be more of a moving target most of the $2.2K range properties that people are asking for a larger sqft properties w/ 4 bedrooms. Not having seen the specific new construction you're looking at I can't comment on if you can ask $2.2K but I will say your funnel of potentially qualified applicants would not be as big as I'd like to see.
Feel free to DM me w. any questions