Are those attack/defense/short/long units? Whatever they are seems kinda high. I guess it's better to shoot for the stars and get worked down then start too low and not get the op race you want haha!
How about something special for clock time:
00:00-08:00, attack/defense +20%
08:00-16:00, att/def -20%
16:00-24:00, normal
Attacking at night they can bypass guard towers, or maybe as part of racial strat. Maybe it can prevent enemy MC from working too. Shadow Raid strat, yeah!
Defensive spell that hides troop counts from enemy TS.
To compensate from powerful units and fit lore, birth rate -50%.
Also, what kind of armor/weapons for those troops?