No reason for thanks, for details I might be the right person to talk to 
Uh, oh…well…regarding wet and dirty conditions - you should avoid these, your Strida doesn’t really like them!
Please consider also the loss of the magnetic wheel catch function.
And furthermore, regarding custom hub:
Do you have any idea of the costs of a custom hub?
Expect several hundred Euros per piece if it’s professional made.
To find good rims will be the next challenge, obviously are nowadays very less people willing to lace a HQ 16" wheel - and according to zero demand there are less offers.
Here’s an example:
http://www.wandamotor.fi/dm24-black-p-28783.html
That’s a 305er 36H hollow section rim which is equipped with rivets - the best choice for my money…so, and here’s the challenge:
Try to find an alternative supplier in Europe!
Even with the correct name of the rim Alex DM24 305/36H you won’t find one I guess…