Happy to buy those shifters off of you and use them for their intended purpose, them being so good at it (and me regretting selling the pair I had several years ago when I lost my job).
I do like the Di2 electronically activated bell. Use an Alfine setup since only one lever has button functions (keeps it simple) and Di2 Alfine is not exactly the most popular thing (aka discounts on new/low prices on used).