While Silva is technically better, I think Sadiq fit so much better in this style of play. He is faster and can jump higher, and that is essential, in my opinion. Can't have someone slow there.
I wonder how that much higher defensive line coupled with a mid block is working? Defensively you're really compact with that choice, but are you finding balls behind the defence a problem?
And about the TF role, how is it working? I'd though that a PF would be a better choice, just because playing a TF as a lone striker, there's situations when the ball is played direct to him, in times where he can be too isolated for that. But of course, that's just theory