Raft (three possibilities) is only the first layer on the print bed (Raft // Grid is making two layers of plastic before the print starts).
With that bunny ring, you can use 'raft//grid' to make a good base and combine it with a support structure (eg. 0.5mm distance, 45 degrees and I would suggest to inflate support as well with 1 or 2%.)
Another option is to rotate it, so it's laying flat and requires less support structure.
You can use different settings and check the 3D gcode (models and paths) what's it doing.