While your sentence is understandable, the following is better. As long as the principles are adhered to, any type of approach will do.
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PeaceblinkfriendSo, I could say 'whatever approach it is will do', right?Yes, though it's a pretty weak (not to say lame) relative clause!
PeaceblinkfriendClive.No Clive in this thread.
PeaceblinkfriendI was wondering if I could I say it in another way without identifying a person or using 'it is'?Use any instead of whatever and don't use a relative clause at all.
CalifJim