Are there any cross slot drills in your area? I do not know what your soil dynamics, how heavy your stubble residues etc are. Cross slots book is worth reading. (Cross slot planting in stubble- usa) You can re-equip an old seeder with cross slot equipment sometimes. Some people like cross slots, others prefer strip till and other methods. Strip till, direct drill into stubble. Using something like a spiked rotor with
Discuss this in the forum topic Flail Mulchers.