I love triples and they are fun to make as I’m sure you are finding out! looking very good so far for sure!
Well done! 
This makes the S2+ considerably shorter.
The tint of dedomed LH351D is one of the best. It already happened to me that I turned two of them partially blue with slicing too low. 
This has been my most carried light. Later on I have also changed lens to clear sapphire one for scratch resistance and tint improvement.
I’m impressed Haukkeli. So many things done here that I would have no idea how to do… Yet 