We'd love our kids less. No, really, when animals have more babies, they invest less time in them, whereas when they have fewer babies, they invest more in each baby. See r/K-selection. The result is that we'd likely lose more kids (to disease, starvation, sibling murder, new parent murder, etc...). That may not be the worst thing though - the evolutionary pressure would keep the 'unfit' from surviving (note, I'd probably be unfit).
Would start smaller.
The current hypothesis about why gestation takes 9 months is that Mom's metabolic rate when she gives birth is about double her non-pregnant rate, and if she holds on any longer, she won't be able to metabolize enough energy for both her and the fetus(es). There is no evidence that bipedal walking is affected by the width of the hips. Since fetuses are growing (basically) exponentially when they are born, that only means a one or two month change: the same as most triplet and quadruplet deliveries now.
Since you want the kids to be just as intelligent as current humans, infants will be helpless for a few months longer and children will be autonomous at a much younger age (so the parents can deal with the next litter).
The largest metabolic cost for humans is neither growth, nor activity: it's our brains. Any suggestion that we'd grow more slowly because Mom and Dad can't handle the caloric load ignores that fact. Evidence suggests we'd actually grow faster so that the kids could handle themselves earlier.
There is no reason to suspect that human anatomy would change beyond more mammary capacity (Mom's and maybe Dad's!) and fat stores. If you want something else to change, consider Pleiotropy - nobody will prove you wrong for at least 25 years.
The only other animals who undergo menopause are killer and pilot whales, both of whom send daughters out to other "family" groups when they mature, and usually only produce one calf at a time. If the family structure doesn't involve sending women away when they become mature (for example, because the boys leave too) the twilight of female life may involve more babies.
An 'r-type' omnivorous apex predator is terrifying. It's very unlikely that such a creature would ever evolve to be as intelligent as we are, but if it did, there would be a lot more internecine warfare because humans would be the only creatures applying downward pressure on the population.