1/ Smoke is fired with ATT: Basic TH7, Modified TH9 (+2 Smoke)... but Ammo Depletion s8
DRM +1 BU, +2 Concealed Target, you need A DR7
2/You could fire ITT, but couldn't Acquire the target : C6.5, You could acquire only a Known Unit
3/Almost, if you are BU, you suffer an additional +1DRM...