Ok…well… like all things web there are many ways to do this. Adding in the mix of Verge3D then you have a few more.
My initial thoughts are you only need two plane objects and a single camera.
The planes will act as layers. The top most layer will be you spelled out name. This will be a created using a sprite sheet with an alpha channel so only the name appears. The bottom layer will be a large texture of all your content.
To navigate you have tbree options…you can move the camera or you can move the plane or you can move the UV map. Choose one that is easiest for you.
Next you will have navigation to control the movement. You can use simple plane objects, that match the curvature of the buttons you have. Give them a completely transaprent texture…place them between the two planes.
If this is the only thing you are doing…you could consider going up to 4K on the content but 2K with HiDPI compositing will probably be good enough.
And all is done.
Super simple, super performant.
.
