Yea, I’d be careful with the TUTH around your kids. Just because you never know.
With your current pheromones, I’d say a little Ammo and Shine will probably go a long way. Then perhaps introduce the TUTH when things have really started to get kinda heated up.
It sounds like your relationship is healthy, just needs a bit of a spark, so I don’t know how significant of an impact Instant Honesty will make.
I’d probably just go with IMF, light Ammo, and IS. Then if things start to get better, maaaaybe try some TUTH.