Fantasy Football Question

[SeeingRed]

Looking to start a new league this year. Want to make it a Dynasty league and also include defensive players if possible. If anybody has any info on what might be a good site to use for this please recommend. Thanks. Have no experience with Dynasty leagues but kinda like the idea. Did a league that included defensive players last year for first time and liked it a lot....expands your knowledge of defensive players around the league. Just not sure if it's possible to pair that with dynasty or if so where it can be done. Any info is appreciated.