Hi, currently I am on unifi 300mbps package, with fiberhome router.

I have several questions:

1) for wireless backhaul using asus router, i am considering 2 units of XT8 / 2 units of AX57. From my understanding, XT8 pros is dedicated 5ghz (2) wireless backhaul. But since my package is only 300mbps, AX57 even with wireless backhaul should still have half of the bandwidth right (2402mbps divide by 2, 1201mbps), so by getting 2x AX57 i can still achieve maximum speed as compare to xt8?

2) for wired backhaul, will there be issue if i were to connect router in this way?
.Tm unifi modem to fiberhome router
.2 LAN cable from fiberhome router to AX57 unit 1(mesh 1) and unit 2 (mesh 2)

Or second unit AX57 need to have its wired backhaul connected to 1st AX57?

3) wired backhaul
. Tm unifi modem to fiberhome router
. Tm unifi modem to ax57 unit 1
. Tm unifi modem to ax57 unit 2
This way i can save 2 LAN port on fiberhome router, but will it work?