Updating Exchange 2013 CU1 to CU7

Hey,

I'm just standing before update of our stand alone Exchange 2013 CU1 server to CU7. Is it OK to do this update this way or should I start with patching lower CU's like SP1 and then CU7. Are there going to be serious problems or no at all? I have to do this update on production system - unfortunately no test environment is possible in my case.

Do you recommend any advanced process during installation of this CU that differs from manual on TechNet? Are there any critical post-update todo's? We are using OWA (with IIS modified to support only SSL access, ActiveSync). 

Thanks, best regards

Matt