It's good and an easy watch, only 5 seasons. SURE you can watch all the movies too and maybe the spin off series but in all honestly you can probably skip the spin off.
The first season can be a struggle to get through for many people but you kinda have to watch it as everything ties together. and there's a major plot point you won't understand or appreciate in the last couple seasons unless you watch season 1. But once the Shadow War kicks off man that show hits its stride, starts running, and just doesn't stop until the very last episode.
The space combat is probably the absolute best. The best part in that series is seeing jump gates open at JUST the right time and wondering whose coming out of them.
