I've gotten like 10+ firecapes for my accounts. All were mains except for 1.
I used cheap gear..
Blessed coif
full black dhide (or rfd gloves)
snake boots
rune kite
Rune bolts all the way through.
glory
prayer cloak
rune crossbow
inv was 4 brews, 2 range pots and rest restores. I usually had a brew left over.