[Elecraft] K2 finished, any preferred sequence on the add-ons?

[C. van Ravenswaaij]

Hi all,

K2 nr 2915 is alive.
It was a great pleasure to build it. Now on to the add-ons. I have the 
KAT2, KIO2, KSB2, KNB2 and KAF2. Is there a preferred sequence on which one 
to build first?
Thanks for your input.

Best regards,

Cornel
PA3BTS