openwrt hardware selection, testing different board features. U7628-01

I was contracted to design a custom firewall based on openwrt. Openwrt is a small Linux image that usually runs on a arm processor or SOC (System On Chip). Most commercial and home user routers run on some variant of Linux.
Orange Pi R1 Plus
https://www.amazon.com/gp/product/B09M413HR5/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B09M413HR5&linkId=563877cf88db60b0d4fb7676ce829b40

My Favorite Board U7621-06
http://www.unielecinc.com/q/news/cn/p/product/detail.html?qd_guid=pyrEjfTmYf

My Second Favorite Board U7621-01
http://www.unielecinc.com/q/news/cn/p/product/detail.html?qd_guid=MDSixFKqTp

Older Board U7628-01
https://www.aliexpress.com/item/32816981605.html?spm=a2g0o.productlist.0.0.6ebe61242P7R19&algo_pvid=dd040caf-7323-427d-8da1-ac302041abe6&algo_exp_id=dd040caf-7323-427d-8da1-ac302041abe6-25&pdp_ext_f=%7B%22sku_id%22%3A%2264789943590%22%7D&pdp_pi=-1%3B39.69%3B-1%3B-1%40salePrice%3BUSD%3Bsearch-mainSearch