Given they could have simply just ended the series there. I don't want to know how much this show costs to produce with the size of its cast.
Octavia was a hell of a bitch this season, but then again she never listened to reason on the earlier ones either when her bf got killed. Going to miss Monty though. Didn't really seem like a thing he'd do character-wise though unless his actor didn't want to return and this was the writer's means of taking him out on a good note? Granted he's tired of all the killing/sacrifices needed, so perhaps literal decades alone with his girlfriend and algae was better than risking his plan B not working out.
Just hoping the next season won't be a retread of familiar grounds with landing on the planet, getting your bearings, getting your source of food, and then encountering humans-with-makeup to have to eventually fight a war against for survival.