For a minority of parents, the child will be "failure to thrive" and for that you will need to measure intake, but the child will also be on special high calorie formula anyway. So at this point the advantage is irrelevant.
"Measuring" is a really stupid reason to deny your kid the other benefits of breast feeding. However, there are many viable reasons not to breastfeed, such as it's just not working, or the mother needs to work/have a life, or it's painful, etc.
Politics, nutrition and parenting are all conversations I attempt to avoid, and this combines 2 of 3 topics. :/
That said, it was pretty obvious that she was getting enough, it was just mildly uncomfortable not knowing how much.
Also agree on sleeping separate - we put ours in the nursery after three nights. He sleeps 7pm - 8am now (at 8 months) and is very happy. Bizarely, tired babies don't sleep well (ie don't keep them up in the hope they'll sleep longer). Put them to bed before they get overtired. If you share a room you will wake each other and you'll all be tired and cranky.
#2 is sleeping in her room in crib and we have a twin bed in that room and we take turns sleeping in that room with her. She starting to stay asleep at night for longer periods and is almost 6 mos old. She also has terrible reflux since she was born and would vomit up even breastmilk so she is on a special formula.
Don't be afraid to sleep with the baby if you feel like it, and don't be afraid to put them in their own bed if you feel like it. It's ok. Also, putting them in their own bed in the same room for a little while gives you a lot of advantages (easy to check on them without getting out of bed etc.)
Basically, just do what you feel like and if it isn't working try something else.
We actually have two changing tables in the house. One upstairs and one downstairs. Last thing you want is trying to change a kid on the floor who's starting to twist and turn and has a really poopy diaper.
...or if there was a catastrophic containment failure.
In my experience this leads to drastically less sleep. You disturb your baby and your baby disturbs you. We put the baby in another room and invested in a baby alarm.
* Seriously consider breastfeeding.
Yes, but don't pressure yourself too much...the most important thing is that the baby eats properly. Bottle feeding gives you the critical advantage of being able to measure how much the baby eats.
* Don't waste your money on a change table.
I would say invest! After a week or so of leaning over to change our baby it really affected me sitting at the computer to code. Bad back means bad news for your startup.