In that case, if he could, he might consider putting his 3axel at the end. Granted, his 3axel seems to have deserted him this competition, but it's his money jump and I don't expect it to be gone for long.
On a note related to this and beyond Keegan, I love seeing all the programs so early in the process! However, so far, it seems very few SPs are taking advantage of the new jump distribution bonus. There was this one girl's SP where I'm pretty sure her last jump missed the bonus mark by about 10 seconds. I really thought the rule change would have a bigger effect on jump layouts. Although, I haven't really seen that many SPs yet.
I have a mixed feeling on this one.
Keegan tends to pop a jump (or two) when he gets so nervous, especially at a nerve-wrecking competition like the US Nats, I am afraid. It's too risky and surely kill his chance to place higher if he is to pop 3A into 2A or even 1A...
I would rather want him doing 3Lz, which is his best jump I think btw, as his final jump in SP, so that he can add 3T later with this 3Lz in case he misses his opening 4T3T combo.
Actually I believe it's too risky to put 3A at the end in SP for most of boys, maybe except those who have pretty consistent/reliable 3A such as Yuzuru and Daisuke. Boys, in general, are not good at doing a clean SP to begin with, don't you think? (Verner, Abbott, Joubert, Rippon come to my mind.) Knowing they can't miss any jumps, boys always get more nervous in SP than in LP, compared to girls. To me, boys seem more relaxed in LP, because they have back-up plans/opportunity/jump contents enough to regain points later in their program, and stamina for doing so of course, in case they miss one or two of their big jumps at the beginning.
And I think girls are opposite for that matter. There are many girls who can skate clean SP, but are not good at skating clean LP due to lack of stamina/difficult jumps (3Lz and/or 3F). In case they are to miss one of their combos or two at the beginning, it sometimes turn out to be disastrous.