Sierra-style adventure with T3D?

Hello all, I'm brand new to torque, and fairly new to game design in general. I absolutely loved the Sierra-style point and click adventure games (King's Quest, Quest for Glory) and I think that genre would be fantastic with more modern graphics and computing.

I tried other game engines (AGS, Wintermute) but they aren't very well developed or powerful. I noticed the team behind the King's Quest fan game (The Silver Lining) used Torque for their game, so I decided to give T3D a try.

I'm not inexperienced with programming, but it certainly isn't a strong suit. Therefore, I'd like to get an idea of how to start modifying the FPS core engine to better suit this type of game. Here's a list of things I'll need to add/change: (and in general, my games will be more like QFG, so RPG/adventure hybrid)

Camera:
Static or
Follow player but no rotation (semi-done with RTS tutorial)

Mouse:
Show cursor (done with RTS tutorial)
Mouse clicks perform functions (done with RTS tutorial)
Trigger events
Show triggerable events
Allow different cursor types with different shapes/models
Cursors change when action is selected
Cursor editor?
Functions respond to active cursor type
Cursor animations
Mouse activates icon bar GUI
Recognize when clicking certain/particular items/objects/areas
Area of click detection

Combat:
Combat initiates new scene on contact with enemy or event? More strategy oriented
Or combat takes place in the same scene/worldspace? More action oriented
Create melee combat system
Create spell combat system
Create throwing weapons system

GUIs:
Inventory, stats, spells, skills, character select, etc.
Dialogue
Speech
Portraits
Conversation topics
Lips synching to words?

Melee:
Range of attack types
Range of weapons and weapon types
Shields, shield attacks, defense types
Dodging
Armor protection

Magic:
Spell editor?
Spells trigger events (easyish to create)
Invisibility, levitation, flying, teleporting, detecting, etc.
Combat spells (can use FPS framework)
Projectiles, explosing projectiles
Streams/AoE spells
Indirect attacks (create harmful objects, barriers, etc)
Reflect magic, reflect damage, resist damage, etc.

Stealth:
Sneaking (check skill level, carry weight, distance, etc to determine effectiveness)
Acrobatics (move player to location while playing specific animation?)
Lockpicking/disarm traps (check skill? minigame/puzzle?)

General:
Puzzle points
Minigames?
Narration (voice and text)
Death animations (lots and lots of death animations)
Death messages
Import savegame to following games

A lot of these won't be too tough for me to do once I get the hang of the scripting, but there are some things that I'd like some help getting started with, such as the mouse cursors, adding a dialogue system, initiating combat, etc. Also, I'd like to hear some opinions about certain preferences, like- one large level for the whole game, a level for the outside environment and separate levels for indoor rooms, or just a different level for each scene. Camera style goes along with this.

Thanks for the help!