Making the pouches can be thought of similar to herb-based folklore, except that you must do it on an obelisk instead of at any RS gold bank counter you wish to. The supplies are required, and you make them. I hope that this has cleared the summoning for you.
For a team, you'll need to achieve 100+ combat including 75+ attacks and 80+ strengths at at a minimum, Plus 75 or higher defense, so you're no longer in a restaurant eating all day. Take 70 prayers and piety, 43 prayer won't suffice. Make 52 summonings for the Terrorbird at a minimum, even and if not 67, then 68 in exchange for a war tortoise/68 for a Bunyip. You should raise your magical level (to perhaps 70) to be able to get there, and to help against being Mage-raped.
The minimum team stats is 80 attack, 75 def,75 str, 52 summons, 60 prayers 75 magic to get magic def. They aren't minimum statistics. Minimum is to be 85/85/85 with 70 praying as well as 80 magical and possibly fruitbat. When cheap Runescape gold I put the numbers you suggested in Zybez's combat skill calculator, the result ended up being 96cb. 115cb is the minimum and most teams will want for 115cb for chaos.