Baldur's Gate 2 part 45 SCS Insane - no spellcasting / kill the red dragon Firkraag

Insane protagonist lives mentally in Age of Enlightenment.
Rules of this challenge4fun:
1) My protagonist is out of mind and insane so he doesn't recognize the reality of metaphysics in the BG's world, therefore he doesn't allow anyone in his team to cast arcane and divine spells from Spellbooks and scrolls, except if it is necessary to complete quests
2) Learning from scrolls may be allowed, but it should not make a big impact on game. Haer Dalis will learn alot from scrolls up to 6 level because he does not have slot for higher level. I will collect some scrolls in case I got stuck, then I will use magic from scrolls.
3) Magical items and Potions are treated as products of scientific and technological progress so it is allowed to use. I will try not to over use them. Healing potions will be drank enough, few times Magical Protection used for Viconia (to raise Magic Resistance etc.), for harder fight I will use Potion of Speed - their number is heavy limited in game. There is no point in using a lot of various potions because tougher opponents will use Display Magic as often as it is needed.
4) My protagonist is for equality of every being and classes so all innate or special abilities are possible to use. High Level Ability of mages, clerics, bards are allowed if it doesn't look like spellcasting.
5) All summons from Items, Innate Abilities and HLAs are allowed. These are treated as calling friendly units from surrounding to support. Only summoning from Spellcasting is forbidden. However, I will try not use Spellcasting from summoned creatures. For tougher fights I may break this rule. I will inform about it.
6) No prebuffs unless there are some clues of an impending fight
7) Pre battles rearrangements of equipments and items are allowed if these very same rearrangements can be done during fighting
8) Not allowed to use mixtures and potions that increases pick pocket skills
9) Shoplifting is allowed when pick-pocket skill at maximum - 250 points ( items giving bonus are allowed )
10) Stealing from NPC is allowed when pick-pocket skill is above 200 points
11) Stealing from NPC that can be killed without reputation loss is allowed at any level of pick pocket skill
12) I will try not to over-abuse stealing mechanism but due to high difficult of challenge I may need stolen gold to get through some impossibly hard situations
13) Money should be no problem in later game but for the first 4 - 5 chapters I still should have to be careful about spending
14) Re - filling items should be done by purchasing it from sellers, not stealing
15) Resting in Inns only with the cheapest rooms - no buffs after resting
16) Resting until full recovery - this option is ON - I consider it is only time saving option, my protagonist have an innate ability to heal, sooner or later the whole team will be full healthy
17) Resting until full recovery - this option will be OFF - when i got some items regenerating HP, I will just leave time to pass by and wait for optimal recovery. Time that is passed by will be cut off from this video presentation
18) I will use EEkeeper to fix errors, mistakes, misplays and to regain missing items, re - choose skills and stats that I wrongly have chosen while leveling up characters - mostly about proficiency points in weapons.
About SCS mod installed:
all features default and - Inquisitors dispel at their level - 5 arrows of dispelling in shops ( although I will do my best to not use them ) - 50% normal rate reputation increases - Watcher's Keep accessible from the start - Gaelan wants 120k gold - Licence costs 50k gold - slightly harder the first dungeon - remove nonmagical ammo from random containers - not install NPC customization and management
My protagonist starting profile:
Dwarfen Defender, Chaotic Good, 18/70 str - 17 dex - 19 con - 9 int - 5 wis - 7 cha , total points 75 - not rerolled, War Hammer *** , Swords and Shields Style * , Two Weapon Style **

[@jebaldinhonguyen]

54:00 fight Firkraag, consuming only half the Wand of Spell Striking, several potions of speed and a lot of regaining health potions. Before this 2 items have been lost due to errors, a sword and an amulet, so I recover them by Console. These might be useful in some tough fighting in the future.
I steal a Wand of Spell Striking from shop using Hexxat with 250 points in pickpocket without drinking potions. Also I steal some other items that might be very useful later. As I stated previously, I will not over-use stealing from shop. With SCS mod, the Wand of Spell Striking is NOT found at the second level of Watcher's Keep, probably there is some at deeper level of the Keep, I will find out later. For the current campaign I need only 1 this kind of Wand.