A basic CRUD project to be completed by using VAADIN or alternatively angularjs.

Hello...

I need a really basic CRUD Vaadin project to be completed.
It is about 3 model objects, which needs to be saved/listed/modified/deleted. This java app should use JPA. and should be able to connect to a MySQL db.

These 3 model objects are Project, Activity, Material

Project has activities
Activity has a Material, list of Dependent Activities, list of Compatible Activities
Material has list of compatible materials.
And the rest have primitive types string, long, date.

That's all. These dependancies in CRUD forms should be added as an ADD button.. For example in activity form screen there should be ADD dependant activity or add compatible material buttons so that you can add those dependencies and be able to delete them as well.
In the same way in the material form you should be able to add delete compatible materials.

Entering data order shouldn't be a matter.. I should be able to create projects,activities,materials. And then need to be able to add depedant activities or compatible activities/compatible materials...
Application should do reads and writes to db as well..

I am also developing back end java code. I know very basic vaadin. My time is limited that's why I would like to ask help someone who knows vaadin. If you feel confident with vaadin I would like to hear your money expectation and time frame that you can complete this.

Thank you,
Emre.