I mean sure I honestly think it's rather bad since you should be far away, and the stats it gives are not as good as the other items, but it's viable. I would try it out if I were you, and tell or show me the results.

Ah, E is usually stacked at choke points, for example in front of dragon or baron pit, also around the walls in bot lane, with CDR your e recharge time is so fast that you can easily place them around whenever. Tribrush is also a good place, after 12.8 drops, you can stack traps 3 minutes before dragon to instantly one shot it.
As for hitting W, that's easy if you're playing with a cc support, if not, try to aim for a trap where you know someone will walk into, for example in one of the 3 brushes bot.
Unexpected spots around a lane as long as it avoids minions is also good, place traps primarily on the backline casters if you want to fast push it in the early game!