As long as you have an account with 50+ Hp and 75+ range I will get you a firecape on your account. The expected time varies between accounts. Higher level accounts usually take around 35-40 minutes and 75-80 range accounts will take 1-1.2 hours.

Equip your range gear (not expensive, I don't expect you to trust me with a lot), a blowpipe with enough rune darts and zulrah scales, 8 super restores, 2 prayer potions, 1 stamina potion and the rest of the inventory saradomin brews.