Dear, Client.
I have checked your description so I know what you want. Actaully, now you want to get perfect WPF/UWP/C# desktop app.
I am very familiar with such job and until now, I have been working with many business for 6+ years.
For this project, I mastered Python, C#, Qt, UWP, WPF, React, React Native, Node.js and Electron. If you use this frameworks, you can reduce the time.
If you give me a chance, I 'll do my best.
Regard