What i have been told is that the scar is very long and that it also goes "up", making it harder to conceal.If your planning on keeping your hair that short then SMP will look amazing on you I'm sure. When my back and sides are that short my scar is barely noticeable with the SMP..theres then a spot between the length on your pic and grade 2 where I can notice it a little but then it covers again when it gets to grade 3 and above with hair.
Here's another pic from the other side
And yes, my idea would be to keep it this short.
i thought about fue into the scar as well ( in addition to smp ) but i'm not it would make any difference.