I would like to get the km 131r Kombi system for the pole saw, scythe, and string trimmer, but I also need to cut some heavy brush. Ideally I'd also get a dedicated clearing saw but both of these at the same time are out of the budget. The brushcutting head on Kombi attachment comes with a 4 tooth grass blade; can I get a different blade to cut larger brush and saplings? Will I be disappointed trying to cut heavy brush and saplings with it?