What do I do with my Light Dragoons?

I have a small unit of average impetuous Light Dragoons, but I can't decide what to attach to them.

With the points available, I can do the following:

• Make the unit a large unit
• Make them a superior unit 
• Make it a veteran unit that is no longer Impetuous
• Add a brigade commander
• Add an Artillery battery detachment 
• Add a brigade commander or artillery unit to an infantry unit or cavalry unit

Tactically, the unit can be used in multiple ways:

• As a direct charging unit working with the paired Shock Heavy Dragoons 
• As a superior unit better in combat
• As a veteran unit better able to act independently and make cohesion checks
• As a unit lead by a commander that makes it better ijn combat and better cohesion checks (though not as good as a veteran unit)
• As a unit able to stand off from infantry in square and shoot them with the attached artillery
• Add a brigade commander and use it optionally away from the rest of the division (On the other flank of the army for example)
• Use the points elsewhere

What to choose?