WPF Gantt chart modification

I would like someone to modify this source code: https://github.com/mrg41/Crono

I want 3 modifications:
- Material Design replaced with Mahapps.Metro
- On the Gantt chart row lines added, with the tasks
- MvvmLight removed, but still in MVVM, no other MVVM package, just "plain" MVVM

My budget is 75$.

Please include in your bid, the correct companion iconpack, for this project.