I have 4 cats and a now toddler. My suggestion would be - don't put the Moses basket, cot etc out until baby is here. If needed put very uncomfy boxes etc in the cot until baby is here.
Although babies are cute and cuddly to us - to cats they are sniffly, unpredictable mini humans who don't even feed them. Its more the comfy spaces babies get that are of interest to cats.
Once baby arrived, cats were curious, but generally wary. Advice is now all naps/sleeps in same room as you for first 6 months, so cat won't be in with baby unsupervised anyway.
You could try encouraging cat to sleep at the foot of the bed if they don't already. Then they are near you, but away from baby. I also often breastfed with baby on one boob and cat on other half of lap purring away but with a wary eye on baby.
I considered a cat net too - but thought they looked like a bit of a gimmick - a faff and not much use really.
Now my son runs around like a loon, 2 cats are pretty indifferent to him, just watch from a high up place, 1 adores him and winds herself around his legs whenever she can, and 1 goes out and comes back in for cuddles in front of the fire once he's in bed. We all live in harmony! You never quite know how they'll react!