Well the answer is yes and no. It depends of the contents of the script. Blindly attaching scripts to a dialogue without verifying the contents can lead to unwanted "side effects" immediately or later in the game.
In the present case, you would have to create your own scripts as the Dantoine scripts calls for plot items and sets/checks for some globals so it won't work and it will mess up the Dantoine part. You will find a decompiled version of most of the Dantoine scripts here: http://www.lucasforums.com/showthread.php?t=158687
To make your pc a JEdi from the beginning, all you need is a script like this one:
object oPC = GetFirstPC();
//give some xp to your pc:
//this is what turns your pc into a jedi:
//add whatever item you want - a lightsaber is always a good idea...
You can replace CLASS_TYPE_JEDIGUARDIAN by CLASS_TYPE_JEDICONSULAR OR CLASS_TYPE_JEDISENTINEL.
Replace object_template by the template of the item you want to add to your inventory.
Btw, several modders, including Talchia, Lil Jawa, Achilles and Griff have made similar mods in the past.