With more HP, you can start trading DR for Chance to Double Items and plain DPS, for example, with the same build, at 1,090 HP, you could equip a Chapeau Noir and an Elite Amulet of Glory in their respective slots.
Also worth noting that it is possible to manually clear the dungeon at lower HP levels and equip the resulting Boots and Gloves to begin idling a bit earlier.
The Sandstorm Ring is very powerful and will certainly help clear speeds if you have no external buffs. However, be aware that with enough extra Melee levels, better equipment, or buffs from Agility, Astrology, Herblore, Summoning, or Prayer, the Sandstorm Ring may actually become a detriment to how fast you clear the dungeon.
Massively increase weapon DPS at the cost of increased consumable usage
Weapon Choice
This table plots some Combat Simulator results adjusted by the time it takes to produce all of the required consumables with some assumptions made about the exact bonuses available for each skill.
You can view the spreadsheet here. Make a copy to tailor the resource values to match your own, there is also a column on each table that allows you to input your own Sim results.
(link)
The rest of this guide is NOT for your first clear, your average clear, or even your first 100 clears. This is purely to maximize scrolls for any missing items. This will assume 99 in all skills, access to nearly all weapons and items in the game, and access to all DR and HP pets. This assumes you are (unless otherwise noted) using an optimal Agility setup, are using your best dps prayers, your best summoning synergy, and are using Diamond Luck Potions
Melee
This build is the simplest to accomplish, and what most players will lean towards.
This clocks in roughly 20-21 scrolls per hour, depending on if you have access to Shield of Melee Power, and depending on your Astrology bonuses
While the table below displays items in a strict "better to worse", this is only a guideline, it is possible with enough Astrology or different buffs that different setups will be better for you. This should be checked for yourself in Combat Sim.
To use this method, you need to have 1090 HP and 48 DR. This is achieved by using Rocky Waters instead of Lake Swim. Any other method to get you to survive Aeris's stun is usable, but going to cost you more than 3% damage.
This clocks in around 26 scrolls per hour, depending slightly on your Astrology bonuses