In setting up Sitecore 7.2 at my organization for our public facing .com I have run into a hiccup while trying to implement proper CI, Release Management, and Deployment Management. I am able to, using MSBuild, compile my Sitecore MVC code, compile .update packages from TDS, and package each of these in .nupkg files for Octopus Deploy. What I am running in to is that once I have deployed the MVC code I must also deploy the Sitecore Structure/Content which requires me to install .update packages. I have tried the solution provided at https://github.com/adoprog/Sitecore-Deployment-Helpers but for a fairly lightweight site this is timing out around 20 minutes within Octopus Deploy for only my System package, let alone having not touched Structure or Content. I am looking for a way, preferably through PowerShell (not strictly speaking, the Sitecore PowerShell Extensions built into the sitecore web interface after installing that package). Using the SPE would be acceptable if, and only if, I can use SPE's Cmdlets from Octopus Deploy's PowerShell workflow.
Please Advise.