You're right, you cannot change the number of mobs it pulls with bot config for a questing profile. I did a bit of searching and from what I've read it's it would need to be done with a CC and as far as I can tell there isn't any CC's that have added it.
You can change what the profile sells and mails near the top of the profile where it says
Code:
<!-- Change this to keep, sell or mail -->
<SellGrey>True</SellGrey>
<SellWhite>False</SellWhite>
<SellGreen>False</SellGreen>
<SellBlue>False</SellBlue>
<SellPurple>False</SellPurple>
<MailWhite>True</MailWhite>
<MailGreen>True</MailGreen>
<MailBlue>True</MailBlue>
<MailPurple>True</MailPurple>
As for the potion of luck add this
Code:
<Item Name="Potion of Luck" Entry="93351" />
within the Protected Items section like this
Code:
<!-- Add protected items to this list -->
<ProtectedItems>
<Item Name="Hearthstone" Entry="6948" />
<Item Name="Skyshard" Entry="86547" />
<Item Name="Mote of Harmony" Entry="89112" />
<Item Name="Windwool Cloth" Entry="72988" />
<Item Name="Ghost Iron Lockbox" Entry="88567" />
<Item Name="Potion of Luck" Entry="93351" />
</ProtectedItems>