Ost seeding cultivator

[Droplet]

Afternoon, looking for a trailed subsoiler to sow osr with. Has got to be trailed, hyd fold, pref 4m, 6/7 legs with spacings no more than 600mm, road legal, looking along lines of sumo trio then can remove the discs on a bracket frame ( not individually) or a cousins v form subsoiler with adjustable leg spacings.
Want to fit a seeder over the packer roller at back and liquid fert tank over front drawbar. Whats out there?
Thanks in advance