Here is a Helical Toolpath that would do the trick.
One entry and one exit. Very neat and tidy.
These are all the default settings in the toolpath so there is no need to think HSM is too complex for a simple op.
I have found that this type of op works very well as a 2.5 alternative for more complex profiles.
Obviously this is the finish op and assuming the roughing is done.
Keep plugging away.