ArcGIS/QGIS Shapefile Editing Job - Long term work

[**Bid around $40-$50 Max. Work will take us about 8-10 hours to complete in-house.**] This is a small job, we do have more work on similar projects, we hope to find someone that can work about 20 hours per week on long term basis This job is about 'simplifying' a shapefile made up of lines. currently there are TOO many lines and we want to use an attribute to hide some of the lines when we dont want to look at so much details, unfortunately there is no way to do that without manually updating an attribute in the shp called "MAIN" to = '1'. there is not an EXACT way to do this and will require you to make assumptions and interpretations of the data. the best way to explain it is to show it. see attached images and look at these videos of the work been done. [login to view URL] [login to view URL]