Looking only at the technical aspects of what you are trying to accomplish, and trying to shy away from "is this right for your project" which is more opinon based.
The Telerik controls that are included in the DNN system are all WebForms controls and functions. This means that they are usable within your older WebForms modules, but if you switch to using the MVC Module method you cannot use those controls any longer. There are other limitations in making a switch from WebForms to MVC, such as the usage of the RichTextEditor which is designed for WebForms.
Making a transition from WebForms to MVC, in DNN and other projects, is not a simple one-to-one process and you will have technical limitations.