hi,
You can use 6750-10T as it supports cloud management and wifi6 as added advantage.
https://e.huawei.com/ae/products/enterprise-networking/wlan/indoor-access-points/ap6750-10tYou can use SD-WAN enabled routers (6100 for branches and 6300 for head-quarter) and depending on the number os APs, use POE switches and AP6750-10T as per site survey.
You can get more detailed information from following link:
https://e.huawei.com/se/solutions/business-needs/enterprise-network/campus-network/as-service
i hope it helps.