That is coming along very nicely, and you are right you don't see S-58's much. Hopefully with the new Italeri kit available we will see more soon.
I have a pair in the works, an S-58 and an S-58T.
I added extra windows on the 58T, 1 extra on the right and 2 extra on the left.
One thing odd I found with the kit is the landing gear is not the style shown in the instructions, I've found one review of the kit and it made no mention of that fact and I don't see anyway it could get missed since it took me a little time to find the right parts and put them together.
I was also wondering on the CC kit nose, did you have any trouble with the canopy on the S-58T, mine is not fitting right I have about a 1/8" gap I need to deal with.