Wired Network from Huawei B618

[NOTTIES]

Hi.

Please assist the network novice.

This is my situation:
Huawei B618 with Poynting XPOL 006 antenna running like a dream. Getting up to 50mbps (500m from coverage) on all devices in living room. The TV box in bedroom (+-30m away) gets 1.5mbps and other devices 10 - 13mbps with a Huawei ws2331 range extender halfway. What is my best wired option to get better speeds?
My thoughts were:
1. Running lan cable from router to TV box (Beelink GT1 ultimate) and make TV box wifi hotspot (not affecting TV box performance?).
2. Running lan cable from router to wifi access point/wifi range extender (that have 2 lan ports).
3. Running lan cable from router to another "router" (Asus product) and increase signal coverage and strength.

Can 5Ghz wifi be transferred to bedroom with these options as TV box is 5Ghz capable?

All advice and other options (in layman's terms) would be appreciated.

 

[chrisc]

Option 2 is the best solution. I used an Apple Airplay

 

[sajunky]

Two cables, to #1 and #2 and possibly more. #2 acting as an access point. An idea is to off-load WiFi from high-volume stationary devices like TV.