Sounds like you have a pretty good plan... while I did not have the forward white light on my helmet, my 30 years of commuting taught me that
3 lights in vertical line, facing back were a good indicator of "something unusual" to motorists. I tended to have a helmet flasher, seatback flasher and a strong steady light on my rack. I think any combination of that, with at least one steady light are pretty good for indicating "cyclist."
In front, I went with one low flasher and of course a steady high beam. But that three vertical red to the rear seemed to work best.
Oddly, three vertical lights indicate to mariners that a slow tow is ahead or a vessel is constrained by draught. (the top white is the mast head, and the lowest red is the red/green indicating port/starboard side.)
