What should i do ?

Hi everyone

I am having confusion what Hero equipment to purchase from the trader cause i have 3000 gem's and 4186 points from the "Bro Force" event tell the order which should i buy first and which at last ! please !!

( I am only at TH-13 GV0R9LRGR )

1. Monolith Arrow
2. Rocket Backpack
3. Sticky Horse
4. Frost Flake
5. Meteor Staff
6. Heroic Torch
7. Lavaloon Puppet