Well I am a SAHM AND have a full-time career. I own my own business out of my home and have done so since my kiddos were little. It has been wonderful as I can work when I want to work, play when I want to play and am able to take in those little babies when they need care as I do not NEED daycare. Once they are old enough though, and I have not had to deal with this yet, I could put them in a daycare setting 1-2 days a week just to free up my sanity and actually get a little work done
I do sometimes "envy" others who are living out some of my dreams in high power jobs and lunches with other adults, but then I remember about dropping off at daycare, worrying when someone was sick, picking up from daycare, being exhausted and then having to do everything else on top of my outside full-time job (ie. housecleaning). Each has its trade offs I believe.
I would consider giving it a trial run. Do you have any vacation time you can take while you play SAHM?