It's a fairly new journal so it's impact factor is going to be lower as a function of how the impact factor is calculated. (it takes into account number of citations and half life of citations, new journal generally is going to suffer from both). Also surgical journal tend to run a lower impact factor. Few surgical journals are >4 because of the narrower field.
It is the official journal for the Association for Academic Surgeons so it goes to a lot of people who care about research. However, it certainly isn't in the same league as Annals. Probably not to the level of JACS, Surgery, Archives, or even AJS in terms of general surgery appeal since it has tended to be basic science oriented in the past and that's going to limit readership.
Having said that, any publication is a good idea. You can't be too choosy until maybe you are an associate professor or higher. All pubs help.