Congrats.
A newborn is how I got into kettlebells. I had a full garage gym, but even the garage was too far away from the baby.
I did Simple & Sinister in the living room right outside of the baby's room and have been using kettlebells ever since (4 years) and rarely use a barbell now. It was easy enough that it didn't make me wired and keep me awake.
A running stroller was a great purchase too. I could get him to sleep for his nap and get a good run in. You can buy a used BOB running stroller off Craigslist and they hold their value since the initial depreciation is gone. (This was once he was a good bit older, of course.)
My advice - sleep train the baby as soon as you think the little one is ready. We didn't, and to make it worse, we let the baby sleep in our bed. Kinda neat to bond that way, but wasn't good for my sleep or the wife's sleep or the baby's sleep. We were all miserable for far too long. He's still isn't easy to put to bed. Learn from my mistake.
The days are long but the years are short!