If your developers have not yet worked on any solutions using a Model-View-Controller concept, they will find that the ASP.Net MVC Framework will have quite a bit of a steep learning curve.
This is because it's not built on the usual code behind and .aspx physical pages that you normally use in a Web-Forms application, but everything is separated accordingly into a View, a Controller and a Model.
If the deadline for your application is a strict one, I do not suggest that you build it with the MVC Framework, but rather stick with what the developers already know, being Web-Form based applications.
But, if the management is willing to give time to your developers to learn about the 'new' (more like, different rather than new) concept and get comfortable with it, then Yes, by all means, go for it and develop it using the MVC Framework.