Rick,
Interesting way of doing things. I know I speak for the rest of the KCA clan, we like all things Krag. When you get a chance take some more pictures. The members here can tell you a lot of interesting tidbits about the history of yours.
For some questions, how hard was your trigger to drill and tap? My broken one here really resists scratching with a file. On the one into the guard you could use a slotted or Allen set screw and use a touch of wicking Loctite on the threads after you have it just right, that way the screw head will not be detracting from the looks. Over travel is not a safety issue so I might adjust it just a little loose in case the guard moves a little with contraction or expansion with humidity changes on the stock. Would hate to be pulling on the trigger and it not go off when aiming at a prize buck. :-)
On the screw on the trigger, I was trying to think of a method to ensure you have enough sear engagement for safety and came up with using a black marker on both sear surfaces and dry firing a couple of times. You should be able to tell how much engagement you have by how much black gets worn off. Common sense will tell you if you have enough that so it will be safe in all different temperatures and accidental dropping of the rifle. Be sure to lift on the cocking piece and bolt sleeves in your safety tests.
Attached is a photo of my shop made trigger. Again it was made because at that time I did not know you could buy replacement triggers and I wanted a different style of pull than standard military.

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