It appears your kids seem to be the drivers, of this decision. And I think you and your dh need to the drivers instead.
Your 11 year old might might be right. But the decision can't be made on the basis of her opinion, when it's unlikely she has much puppy experience.
But then neither can you base it on 2 teenagers who won't be around much. The 19 year old, could do plenty of the puppy work before they go back. But are they willing to be in the house for the next few weeks? The 16 year old could do alot too.
But, their enthusiasm may wane. My 10 year old is very much involved with the dogs (not the night stuff, though he would if I allowed) and is happy to do what they need. He will jump up to feed them. Doesn't moan if they need something and he is on his xbox (will moan if its not for the dogs) The 16 year old is a bit more fair weather. As the 10 year old isn't capable of doing lots unsupervised and the 16 year old would just sleep instead of walking them, some days. Its mine and dps decision about wether we take another dog in.
About the crate training and over night, it was fairly consuming. But only for a few nights. I would take the dog out, before bed. Sit and stroke them, until they were sleepy. Put them in the crate, with a soft toy about the same size as them. Sit and stroke them til almost asleep and close the door. But stay sat there until they settle. Then slowly move away. Eye contact kept to a minimum.
They we would get up every 2 hours. Put them out, minimum engagement. Put them back in the crate and do the above again.
If they are as asleep we put getting up off by an hour. And before long they were sleeping from 10/11 - 6. Last night was the 10 week old first night. Another rescue, but she only got up that once and slept after that til 7.
We do sleep near the dogs though. Either have them in our room or sleep downstairs with them.
We currently have the puppy in her soft bed entertaining herself with my sons t-shirt he gave her and the middle one asleep on my bed about 3 feet away (she is currently refusing to acknowledge the new puppy 🤣) and the oldest downstairs asleep. She likes sleeping on the wood floors. I am sat on the bed watching TV relaxing.
We still have all the dogs crates, they are their safe spaces. But once they are older, we rarely close them. House rule for all our kids and visitors are, if the dogs choose to go in their crates or bed, they are left alone. It's a non negotiable.
Also, remember all dogs are different. I have no clue if we are really good at crate training. Or if we have just been lucky. There's every chance we have just been incredibly lucky. My experience is that most techniques work. But everyone in the house needs to be consistent with what technique you use.