okay so first. You align, then you start your AB. therefore you actually take 9s to align from gate, because ticks. That’s enough for people to scan you. If you think people won’t be able to kill your DST efficiently after scanning it, you are sooooo wrong. That’s why MWD + cloak allow you , not to be more tanky, but to be much less scanned. Sure you take 11s to align instead of the 9 with AB, but remember that warp takes 40s average(minimum 10s with infinite warp speed on 6 AU warp), a gate takes 10s to pass.
But yes going active is bad, because the time you activate your modules you are dead. Also it won’t allow you to bypass alpha. Your fit has lowest resist for explo/kinetic, so 5 nades fit with fusion will wreck it a new one(11k alpha/nade). And that’s when it’s active. if you forget your hardeners, 3 are enough.
Random nade costs <100M, therefore if you have 1B or more it’s worth it. also 75M only if you get the drop from your nades.
Therefore, the only thing saving you, is if you have less than 1B isk it’s not worth using 5 nades to gank you.