if they are all squish with 1 tank.

your boots of choice. +
if they have ap damage which is most likely.
if they have bruisers with some tank items I'd get a last whisper instead of death dance.
thats what I build am only silver.
what I do is wait to level 6. and after that try to all in any squishy below 75% health. the combo is E to get the damage amp. Q->W u can get Q ready before the E then you ult. they should be dead with ignite.
you roam. I find bot lane a little less appealing to roam for him I usually go top. he doesn't have the mobility of zed so keep that in mind once your in your in. you have slight ms boost from your ult. but thats about it.
I rush maw first item if am against ap. against ad get ravenous first then yommous.
i find talon a lot better than zed in team fights and late game. in team fights you try to all in a squishy. but don't just focus the squishy. use your W and Ult to do as much damage as possible to the whole enemy team but don't initiate they will lock you down and kill you.
I dont main talon but I play him once here and once there and I think hes outdated but hes provides very reliable damage.'
after the qss changes tho am not sure if he will be better than say zed but hes still really good. also if the enemy team has zed feel confident to play talon hes very good pick against zed since your burst isnt delayed and your ult counters his unless there is a pink ward around.
one thing to keep in mind is lack of mobility so don't dive in without knowing you will get the kill 100%.