1. Remove the original drawtube + helical focuser
2. Make a 48mm -> SCT male adapter
3. Attach NGF-S there
4. Attach PST etalon module there
6. Add an ERF in the front (77mm)
If it can reach focus, it should be quite nice. Of course, the coming Orion 100ED should be even better. But in the long run, maybe I can only keep my Ranger since it's really portable.