Happy Holidays to you, too!
Congrats on the over-rationalized purchases!
I trust that headshell can serve as a replacement for many such 'standard' headshells that connect to the tonearm in the same manner? Looks very nice!
As for the resomat, man, you'd need a lot of room for adjustment at the arm's pivot point!
Re: headshell leads, on the one hand, I agree with you that unless you were planning to replace them, which would make sense only if you thought you could improve upon them, fixed makes sense. BUT, having broken fixed lead wires before, replacement is much more of a problem when the leads are fixed. I'm not sure which way I'd go with this, but if I were convinced there wouldn't be any difference in quality, as purchased (assuming good contact on both ends of all wires), I probably would err on the side of detachable.
And wait....damn, I almost looked right past that Unami Blue. Hubba hubba, Huddie, that's a sweet looking cart, and should make for a beautiful set-up with that headshell. I'll look forward to your impressions once you have them both in place.