I think you'll be fine... Ours is top half
line, the rest shock cord and works OK.
But on another item, no reason to let a baby stop you all from sailing. Our new grandaughter was out with her parents at 7 days old.. in November! Now at 4 months she already has several days on the water under her diaper. You may well have to do more yourself, as Mom looks after the young'un. On a 25 footer that shouldn't be a real problem.