This has been a common practice of mine for over 20 years.  Charitable is 50% of AGI.  

Most of my clients earn over 100K. Charitable is the key form to get them beyond the lousy standard deduction. It is also the best way to help clients save money.  

Further, I have only had 3 IRS audits in 20 years. I do have about 500 clients.  None of the charitable has ever been an issue.

My suggestion is to look more into charitable contributions and carryover. You'll be surprised at how much you can save your clients.