I'm flattered you'd ask me, thankyou.
It's up to you really. I have found with most puppies they are quite tired out the first night, so don't mind being shut in the crate at bedtime. You might need to get up a few times in the night with a new pup though, as he/she might not be able to hold on all night and obviously it's cruel to make them toilet in their crate. If you do decide to shut the door, it might be easiest to to have the crate in your bedroom, so you can easily hear if puppy needs the toilet. If pup does need the toilet, quietly take him/her out without talking to them at all or making any eye contact, other than a 'good boy/girl' if they do go to toilet outside. That way pup will be less inclined to wake you up for attention if they fancy some during the night!
If you want to leave the crate open at night then I would leave pup in the kitchen or smewhere that is easy to clean up and yes, be prepared to accidents to start with. It does mean you need to clean the floor really well with biological cleaner (washing powder will do) so the smell is gone and it will also make housetraining a little harder as once pup has been to toilet inside once they are more inclined to go inside.
Personally, I have the crate in the kitchen (where my dogs all sleep anyway) and close the door. I sleep quite light and always wake up if I need to. I suspect it does help that I have other dogs in the kitchen.
Other things that can help pup settle the first night are taking a blanket to the breeder and leaving it with the litter. Bring the blanket hme and put it with pup the first night, it will help them settle as it smells of the litter. I also always get people to leave a soft hot water bottle cover for the same reason if possible and they can then give pup a hot water bottle the first night, as pup will be used to sleeping next to warm bodies. Leaving the radio on quietly for a bit of background noise can help too.
Not sure how open the breeder is to you visiting regularly, but I always encourage people to visit as much as possible once pup iis over 4 weeks old. It really helps when taking pup home if they recognise you, IMO.
Hope this helps, you must be excited!