Personally, I think Chally should go back to basics and adopt the formation which served us so well when he joined and for most of last season.
He took over a side bereft of confidence and turned us into winners with 3 at the back (Lewis, Horsfall, Johnson from the current squad), two wing backs (MSH and Hippo putting aside current injuries), the legendary triumvirate in midfield with high press (3 from Camps, Collar, Croasdale and Sarcevic) and 2 up front (from Madden, Crankshaw and Wooton).
Any experimenting with 4-2-2-2, 1,1,4,1,3 etc. should be abandoned. Trust in what works and what's brought you success, Chally.