But I do not have an FMS?
On the subject of VDP and CANPA. You can still do a mental CANPA (as far as hitting each fix at the required stepdown) on any approach and this applies all the way down to the MDA. I do a mental CANPA down to the FAF and then it is steep to the MDA. I like to get down early.
Now since this is circling only and at least in a 421 I could never make the strait in and would always have to make the circle back to 30. Even with the new runway I find it dicey while trying not to back drive the engines. In the circling environment you are only provided 300 feet of obst clearance anyway and if the runway has a vasi you had better remain at the altitude until picking it up (Unless you know where every stickieuppie is). In a legal sense I always have to ask for the visual if runway in sight before the FAF. When the ceiling is lower than the altitude on the FAF I know I will always circle.