Fengshui of this unit

Dear Master Cecil Lee, I have some enquiries on my new flat whichme and my husbandwill be collecting keys within this month. My floor plan as attached for your reference.
1. We are Catholic by religion and would like to place a Altar in our flat. Can you advise which is the ideal spot to place the Altar? Is it possible to place it against the wall at the dinning area?
2. Do we need to have a divider/partition as our main door faces the balcony directly?
3. Is there anything you can point out to us that we should be aware of for this unit of ours?
4. Apart from the unit's fengshui, like to check, if I am currently pregnant, can I go and collect keys and proceed with the door opening ritual? We won't be starting renovation nor moving in so soon.
Many thanks for your advice.