Hi Andres,
I have 8 years of experience in Java, Java swing development & i worked on many commercial and complex Uni assignment development. I reviewed your requirement it's look pefect to me, i will combine all your plugins code and help you in publishing it. You can see from my profile regarding my experience on java development. Below is answer of your Questions.
What experience do you have with Java and swing?
Very huge experience, worked on more than 50 project in Java swing
What experience do you have with ImageJ?
ImageJ i have basic experience, i develop 1 assignment using ImageJ
How do you plan to implent the cells/roi (see dropbox project details)?
Cells/ROI i will implement using Jtable
How much time do you think you need?
It will take 2 week (10 working days)
Do you find this project difficult?
Not difficult as plugin you developed already just need to combine
Would you be able to improve the plugin with your own ideas?
I need to understand and discuss with you to give my idea for improvement
Do you have experience with github, maven, eclipse and imagej/fiji plugin development and deployment?
Yes huge expereince with Git, Maven, Eclipse as i use it everyday.
Thanks,