I don't think it will look bad on your CV, you can mention that you stayed at home for your child and you can add your studies (bonus!).
I wouldn't want to be a SAHM without domestic help as it is hectic. Days when I'm home is really hectic (even with Dorcas around). I don't know how moms survive without domestic help, even stay at home moms. Looking after a child full time is a full time job! I don't get nothing done with the kids around. So if you won't be planning on working from home and you've got domestic help, I would go for it.
I think the first years are really important in building that bond with your child, but the problem is also, that most times, your kids need you even more once they start going to school! Kayla is now in Grade 1 and for the first time in my life I just want to work from home so I can help her more and be there for her when she gets home from school.
I must admit, it's much more relaxing at work than at home
With regards to gym, if you can leave baby with someone to go to gym, it will be awesome but it's no fun packing your bag, taking baby with you to gym - I used to do that - but packing your baby's bag, take baby out the car, gym, getting called cause baby is screaming, getting dress, taking baby out again is just not lekker.