DLC Guide

This is a general opinion about modified DLC difficulty, suggestions and issues.

Automatron
Available at level 15, not possible to activate earlier. You might want to do it once you have a stable source of robot damage and Salvaging, for all the sweet robot loot.

Far Harbor
Advertised once you rescue Nick, but can be started manually. Level 15 recommended, especially main quest.

Nuka-World
No settlements until you finish the main questline one way or another. Then you can build one at fallout:Nuka-World Red Rocket. Very hard enemies. Level recommended: 20+.