I think anything above 30 your Light Level will be immune to your Damage, thus you will be useless in that activity. Majority of the Activities at 517 will give you Swords, or Skulls above the head of the enemy, thus you will be firing into bullet sponges while getting one shot killed by any enemy. Majority of the Dreaming city starts becoming enjoyable when you hit around the 540 Mark. it is a tier three reward source so you will jump significantly in light once you get to complete the activities. I would suggest, as most people will running your milestones as much as you can, remember the 2 resets a week. I did my adventures, strikes, and flashpoint this week, jumped from 585 - 590. so its not difficult to do.

hi, your milestones that drop powerful gear everywhere in the solar system except the dreaming city will give you strong powerful gear (as in strong i mean they will drop multiple power levels above your max power, but once you hit 550 it will only drop one above your max power) once you’re 550 power the only way to get drops multiple power levels above your max power is from dreaming city powerful rewards, drifters weekly bounty, the raid, and hawthorns clan bounty (if you’re not in a clan feel free to join mine, and i could help you with stuff). i would recommend you wait to do anything related to the dreaming dirty until after you do everything else this week.

There is a lost sector with recommended light 560. Just keep doing your milestones to increase your LL.

You should be ok though some of the enemies may be a bit tougher than usual