Why Hyper-V projects fail
Before you start deploying your first production Hyper-V host, make sure that you have completed a detailed planning phase. I have been called in to many Hyper-V projects to assist in repairing what a "specialist" has implemented. Most of the time, I start to correct the design because the biggest failures happen there, but are only discovered later during implementation. I remember many projects where I was called in to assist with installations and configurations during the implementation phases, because these were the project phases where a real expert was needed.
Based on experience—this is wrong. Most critical to a successful design phase are two reasons: its rare existence and somebody with technological and organizational experience with Hyper-V. If you don't have this, look out for a Microsoft Partner with a Gold Competency called Management and Virtualization on Microsoft Pinpoint (http://pinpoint.microsoft.com) and take a quick look at the reviews done by customers for successful Hyper-V projects. If you think it's expensive to hire a professional, wait until you hire an amateur. Having an expert in on the design phase is the best way to accelerate your Hyper-V project.
Before you start your first deployment in production, make sure that you have defined the aim of the project and its smart criteria, and have done a thorough analysis of the current state. After this, you should be able to plan the necessary steps to reach the target state, including a pilot phase.