Aww OP, don't worry! There is so much information online now and getting a puppy has become such a massive Instagrammable life goal, that it just places so much pressure on everything.
Focus on bonding and playing, training the basics in the first few weeks, and let go of anxiety. The best way to do that is to just expect things not to go to plan, and stay flexible and curious as you go along :) You could look at following a simple puppy course like the one on Zak George's website, etc.
In terms of puppo sleeping arrangements - I'd just pick one or the other. The living room downstairs, or in your bed. You could try teaching him to stay in his own bed in your bedroom, sure. But realistically you'll probably end up with him whining all night, trying to clamber on the bed, etc. You can always try it though. You never know! You'd have to just have resolve of steel and keep sending him back to his bed and prepare for some sleepless nights (which you may have anyway, regardless of where you put him).
For the routine - you'll work it out as you get to know his toileting habits and so on. Generally, very young puppies have crazy bursts of energy, then flop, then rinse, then repeat.
With our dog, we put him in his pen at specific times of the day to help him learn to settle. Late morning, mid-afternoon, and around 7pm. For an hour or two at a time. Then over time, he just started falling to sleep at those times automatically outside his pen. He's 2yrs old now and we do actually still use the pen in the evenings for a couple of hours, to give our cats a break and some quality time.
I've also found that a natural chew works well in the evening for settling. Relaxation Protocol is good for teaching settle. And having a calm night time routine of cuddles, grooming, checking paws, teeth, etc. - it not only signals bed time for doggo, but serves a double purpose of getting them used to handling and associating it with relaxation - which will make claw clipping, vet appointments, groomers, etc., easier.
Final thing is my secret weapon, which is that I rub my dog's chest slowly when it's time for him to sleep. He's out like a light in seconds, and I use this technique to settle him down if he's doing my head in 😂