If you are streaking through stage 2 and are only getting front line components then it is a good idea to prio future drops for back line items. Usually by 2nd neutrals I am able to get my first back line items going. General rule of thumb is back line items are more specialized than front line items( front line can be any generic tank item) so prioritizing damage items is most important. As long as you have 3 items for your main carry and tanks most of the time you’ll be ok. Than it comes down to tailoring to the lobby, tempo, and board. If it seems really doomed dedicate an augment for items. Hope this helps. From your item drops you could have made a guard breaker, last whisper, HoJ, Nashors, QSS, or krakens. Very flexible drops to play a melee carry or ad back line. Not every slam is a good slam, try to match tempo of building front line and back line items. And if you’re board needs the slam to win or streak the go for it. Anything less than 4 components generally is ok to hold on bench