
Buy, clean and mix through the potion tiers, using the server's own shop and prices.

XP-focused Mining, Fishing and Woodcutting. Resources are dropped, not banked.
Power levelling, not gathering. Power Skiller works the best resource your level allows where you are standing and drops what it collects, because banking costs time and the point here is experience per hour. Mining, Fishing and Woodcutting, one per run.
No, and that is deliberate. It drops everything to keep the experience rate up. If you want the resources, this is the wrong script.
No. Anything wearable or wieldable is never dropped, and you can tick anything else you are carrying to keep it too.
Rather than naming one resource, it takes the highest-level one in the area that your account can actually work, and moves up as you level.

Buy, clean and mix through the potion tiers, using the server's own shop and prices.

Fight one kind of monster in one place, and eat when you have to.