hey ryn
i think that for the first baby you should have someone there "just in case" if something happened you would never forgive yourself
it is DH's baby too so i feel that he should have the choice to be there or not to be there dont you want him there even just to hold his hand and share with you the moment you all become a family?
if you want your sister there i think if she is comfortable with it she will be honoured and if she is a good sister she will understand your wish to save cuddles for a week
obviously everyone will try and get you to a hospital it is because people are afraid of what might happen you have to respect that but make them understand that if possible you want a homebirth read everything you can and find a professional in all the places you might be to be able to come and help you