Gl-e750 (mudi) + ss + v2ray + tor?

It is possible install system TOR → SS +V2RAY -------->>>> LTE ------>>>> SS + V2RAY SERVER >>>>>

All traffic going in the TOR after delivered via SS + V2RAY to OUT NODES TOR network.

OR it is possible install SS + v2ray client in the router?

Everything is possbile but this is difficult.

You may use VPN (and ss etc) on the router and use Tor browser on your PC. This is the best config.