In rank if we know we can not 1v1 tf win, then we will sit in the bush and poke the other bush (most of the time I play Maok, so I can sap the bush). I will stay in mid, our top will sit in top bush as a scout, and bot will sit in bot lane/jungle path by wolfs.
If we know that we can get 1st blood and push them back, some times an ace we will rush to mid bush, sap toss into other teams bush and our top bush. Then rush in so if they come we can start a tf. If no tf comes of it, we will go gank top.
As for your item question I will start with bos and a mana or hp crystal on maok. As for your alter question, we will push are lanes out then run to the alter that they have, if they come to fight I will drop my ult and have them come in to fight or let us take it.