Playing 3 DC's is tricky because you need really good shape DC
High skilled always play offside trap with 3 DC
There is
3W
And
3N
I like more 3W DC so your wings are protected
But I played few time with 3 DC and it gave me cup trophy

Look that's the cup finals

3-1-2-2-2. Vs. 3-3-1-3