Emphasis mine, Unfortunately the issue I will have when I turn the fans on the radiator to exhaust is just that, I will have three fans exhausting while only three fans are providing pressure. Either I have to place another hole in the plexiglass side and mount my other exhaust fan there blowing in or mount the radiator on the outside of the case. As it stands my only exhaust fan is placed on the outside of the case and is partially over the TITAN's exhaust, If I turn it around it would compromise the GPU cooling.
Edit:Thinking on it the fans on the H100I are 2700RPM, so having them on exhaust would almost guarantee negative pressure since my three other fans are only pushing air at 2000RPM. Might have to do a bit of case modding to move that other exhaust fan.