I believe your OG was 1.049, so 1 pack of dry yeast is fine…. For a really big lager like a doppelbock, pitching a lot more yeast is a good idea, such as a big starter or two packs of dry yeast.
As far as adding yeast at bottling time, I’ve never done that. When I used to bottle, I was always told there was plenty of yeast still in suspension that would take off once the priming sugar was added.