I like the sound of the 25 KW at about 47 inches but eliminate the 40L or 30J all together.
. Of course this depends on the exact rod. In addition to NGC guide placement guidelines like using the string , you also need to evenly distribute the guides based on the stress test. If its a fast action rod , I like the KW 25 at about 45 based on your testing.
Now for the second listed positions , I like the sound of the KW30 at 36 and then the 25 about 50.
Summary---if you must use a 30 , put it at 36 like the second layout and then the 25 at 50. I would think the 25 at 47 with no 30 would work pretty well but again , all this has to be modified based on the stress test.
Now hat I usually do is figure out a best layout based on the stress test then make slight adjustments in key places to allow the stress test optimized layout to become an NGC type layout. Also remember that the best Concept layouts also take into account spool upsweep , not just spool diamater. Its become a real balancing act but the more you look at all these things the more intuitive it gets.
The Aglersresource GPS allows you to get some pretty good concept layouts using both the reel diameter and seperately including the spool upsweep without actually mounting any guides. I use exponential equations to estimate the spacing based on the rod action (stress test) all this is done on the computer. Then i massage the input from the 3 computer models until the concept and stress test numbers are close or at least acceptable. Then I mount the guides at the calculated spots and then test cast and do the final tweaking. This sounds like a lot but the computer generation of the three layouts , the adjustment of the three inputs to one that satisfies all requirements just takes maybe 20 minutes or so of computer modeling once you get used to doing it and it becomes intuitive as to how to reconcile the three models and make the adjustments to satisfy all as best as possible.
Can you spell Geek?