Making the pouches can be thought of RuneScape Gold like herblore, only you'll need to work on an obelisk instead of in any bank booth you are looking for. You'll need the supplies, and you make them. Hope that cleared up summoning for you.
As a player, you'll want to achieve 100+ combat having 75+ Attack as well as 80+ Strength at a minimum as well as 75 or higher defense to ensure you're not there eating the whole time. You should get 70 Prayer and Piety and 43 prayer will not make it. Find 52 summonings for the Terrorbird at a minimum, if not 67 or whatever for a War tortoise or a Bunyip. Make sure you raise your magic (to perhaps 70) to get there and to prevent being Mage-raped.
The minimum requirement for a team are 80 attacks, 75 def ,75 str, 52 summon,60 pray 75 magic to gain magic def. They aren't minimum stats. Minimum is to be 85/85/85 including 70 prayer and 80 magic and maybe an fruitbat. When I entered the stats that the easiest and fastest way to make money on runescape you suggested in zybez's fight skill calculator, the result ended up being 96cb. 115cb is the minimum and most teams would ask for 115cb to be chaotic.