Unarmed version:
Jedi 1/Soldier 2
Feats:
Martial Arts I (1st)
Force Sensitivity (bonus Jedi)
Weapon Proficiency (lightsabers, simple weapons) (bonus Jedi)
One Soldier starting feat, any
Echani Style (bonus Soldier 2nd)
Force Training (3rd)
Talents:
Jedi 1: Choice. Purely mechanically, the Clone Wars Campaign Guide's High Impact talent for the Believers force tradition would work best- however, they're a Sith cult. Many of their actual talents don't appear to actually use the Dark Side, and you could try to make a case for having independently rediscovered the tech. By flavor, it looks like you ought to take Telekinetic Strike, which is kind of pants but won't kill ya. If you go the other way- start with Soldier and go into Jedi- you could pick up the Legacy Campaign Guide's Cortosis Gauntlet Block, which would be really interesting but lose you proficiency with lightsabers. That might be cool, producing an anti-Jedi sort of character.
Soldier 1: Hammer Blow
Force Powers: Convection (Jedi Academy)
This build focuses on pure offense- few special maneuvers or other fancy things, your unarmed strike just hits like a Mack truck. Hammer Blow lets you double your Strength bonus to attack rolls when making an unarmed strike and holding nothing in either hand: Echani Style lets you double your Strength bonus to damage, as well as offering a per-encounter knockdown attack, if you make no more than one more attack per round. So PUMP YOUR STRENGTH to the absolute maximum tenable: this gets disgusting on a Togorian but is still an incredible boost anywhere from 16 +3 on up. Convection allows you to add a variable number of d6es to your unarmed damage based on a UTF check, and sustain them over multiple rounds with a swift action.
Of course, if the complete re-build doesn't include ability scores, this isn't going to be terribly useful to you. Alternatively:
Jedi 1/Soldier 2
Feats:
Wary Defender (1st)
Force Sensitivity (bonus Jedi)
Weapon Proficiency (lightsabers, simple weapons) (bonus Jedi)
One Soldier starting feat, any
Combat Reflexes (bonus Soldier 2nd)
Scum and Villiany's Opportunistic Retreat (3rd)
Talents:
Jedi 1: Block
Soldier 1: Scum and Villiany's Counterpunch
Skills: Train Acrobatics
This relies on a pair of tricks, the first really cheesy and the second only somewhat cheesy but still quite useful.
First trick: As long as you fight defensively, you're immune to up to (Dex mod + 1) melee attacks. Counterpunch gives you an AoO for every opponent that takes a swing at you in melee while you're fighting defensively- not hits and damages you, merely attacks you. Opportunistic Retreat allows you to move half your speed in lieu of an AoO. Move out of range- no more attack.
Second trick: Alternatively, depend on Block and the big increase to your Ref defense being trained in Acrobatics gets you to keep you out of trouble- immunity they ain't, but still quite sturdy in tandem- and AoO the enemy to death while remaining pristine yourself. For future advancement, look for all sorts of lightsaber Form talents and Force powers and Lightsaber Form powers that muck with attacks of opportunity and similar-but-not-consuming-a-precious-resource attacks when attacked as a reaction. They are ALL OVER THE PLACE- like half the Lightsaber Form powers.
Wary Defender is there, and worth it, because both of your fight strategies involve you fighting defensively all the time- so it's a free +2 to Will and Fort defenses most of the time, which is nice.