Extend RT-AC5300 range via Media Bridge

[Logi]

I need an Ethernet port at my office room at home, the Power link solutions are too slow, I was thinking on adding a second router in Media Bridge mode connected to my existing RT-AC5300, I do not need wireless coverage at the office. What would be the best Asus router to accomplish this solution with the highest speed, without having to buy another AC-5300, I think it will be an overkill solution, thanks