>>96404343
>>96404367
As far as general unit mix/composition is good for 1k, as far as money goes.
Maybe the only thing is the bolt thrower. I liked it in 7th ed, but in TOW I can't find a good use for it. I would drop that in favour of an Engineer (for shooting buffs) or Runesmith (for magic defence), if you know what armies your local opponent have.

For the crunch: drop some warriors to save points, you probably won't need the full third rank bonus. Get some great weapons on them with those points, it makes up for the lack of killing power of ironbreakers.
I generally support adding great weapons and shields to shooting units, like >>96404367 suggested, but at 1k it might be harder to fit.
Master Rune of Hesitation might be overkill at this level, unless you know you are facing heavy cavalry, chariots or similar.

And to scale up to 1500 points you don't need much more. Put the thane on the shield, add bodies to the shooting units, play around with runes.
Personal favourite: Engineer with handgun, Master Rune of Bursting Flame, Rune of Rapid fire (aka the bazooka) is an absolute threat.