With a team you'll want to receive 100+ battle with 75+ Strike and 80+ Strength minimum, Plus 75 or greater defence so you're not sat there eating the entire time. Get 52 Summoning for a Terrorbird in LEAST, if not 67 or whatever for RuneScape gold a War Tortoise/68 for a Bunyip. Raise your magical (to maybe 70) for getting there and to assist against being Mage-raped.
As for armour and weapons at that level I'd recommend something accurate and hard hitting (use a whip and you'll just be a waste of space for the group - you'd never strike ). Maybe this: Bandos Godsword (Use the Specific Attack to lower Defence). Helm of all Neitiznot. Amulet of Fury (or Glory if you can't afford this ). Woodcutting Skillcape. Dragon Boots or Climbing Boots (If you need to walk there - make sure these are the 75K ones, then they supply a +2 Strength Bonus). Barrows Gloves (Or best RFD gloves readily available, I suggest getting at least Rune). Good luck, you've got a lot of training to perform.
I state minimal for staff is 80 attack, 75 def,75 str, 52 summon,60 pray, 75 magic for magic def - Those aren't minimum stats. Minimum is to be 85/85/85 with 70 prayer and 80 magic and possibly a fruitbat. When I put the stats you suggested in zybez's combat ability calc it was 96cb. 115cb is the minimum and many teams would ask the 115 to possess chaotics.
A good def againest rrange armour (such as torag) -Nez helm, D'hide top and torags legs is fine. Sharks or food with super pots - Rocktails are greatest, and in the event that it's possible, extremes/ovls. On scape-xp calc it says it will be around 102 particularly I have stats near this and I am in 106 or even 105 I do not really remeber. U need to buy OSRS gold go into the hp lvl tho and several teams will take 100+