Business Central / PrintVis implementation projects are made up of three phases. Implementation, Go-Live, and Transition. Implementation varies depending on the tier of your project. Bronze tends to be 5 months, Silver is 8 months and Gold is 11 months in length. Go-Live is one month. Transition is two months.
The time for implementation is GREATLY impacted by how thorough you want your estimating setup to be. If you have been estimating with spreadsheets for years, taking your estimating into a full-featured system like PrintVis can take as little or as long as you wish. This is a setup process, not a training process. Taking too long at setting up estimating can delay the project significantly.
Customers who want to add more resources to a project and dedicate more hours can shorten that time significantly. There is a limit on how fast any ERP project can go - usually based on decision making, testing, and training hours available to your team.