yeah TnT is the priority for kadala, I don't have a those gems yet (enforcer /zei) but yeah, a better gem selection is a must.You're gonna want +sentry on the rucksack. The TNT should be your priority tho. Also I've been playing with the toxin gem all night (and Ill keep playing with it for now) but it's definitely not better than powerful or zeis or enforcer... as a 3rd maybe but since you only have two id slot in enforcer.
Im not sure if I should take my gift and use it on that 1hander, I have an etrayu aswell that if I used it on would be around 2700dps.
I am not sure what makes one go bow over 1h, im assuming to hit some BP, currently im at 2.16 for myself (same for pets till TnT I think?) then with TnT your pets can hit the next breaking point or something.