missing dependencies for check_mk on ubuntu (omd-1.20) php5 and perl5

I'm following the install/setup instructions which are available on both the check_mk and DigitalOcean sites to setup monitoring based on a Ubuntu server. However I am getting errors that several dependencies are missing after installing via dpkg -i omd-1.20.wheezy.amd64.deb. I've manualy downloaded and installed serveral packages, downloading from www.ubuntuupdates.org, and I'm now stuck with the following missing dependencies.

omd-1.20 : Depends: libperl5.14 but it is not installable
        Depends: php5 but it is not installable
        Depends: php5-cgi but it is not installable
        Depends: php5-cli but it is not installable
        Depends: php5-gd but it is not installable
        Depends: php5-mcrypt but it is not installable
        Depends: php5-sqlite but it is not installable

If I use apt-get -f install only removes the uninstalled omd-1.20 (0.whezzy) software, and not installing the missing dependents. The remaining packages will not install as there are not the newest.

Is there any way to resolve the missing packages? Or will I need to uninstall the current perl and php package and replace it with a older package?

FYI Server is running:

Description:    Ubuntu 16.04.3 LTS
Release:        16.04
Codename:       xenial