We won 3-0 at their place and 3-1 at home.
2/1 to WH but I don't think CH is likely to set up the way you suggest ..unless of course you think WH are a top six side
Please note that my prediction is:
Albion 2-0 West Ham (my phone decided to put it in as 2-1)
CH will be desperate to finally register a clean sheet, especially at home. This will come at the expense of goals.
Going for a 0-0.