I will vouch for Boma. We've eaten there on our last two trips. Our non-adventurous 5YO son slept through our February visit there, but had a huge meal earlier this month. My also risk-averse stepfather enjoyed his meal tremendously. My take on the zebra domes: if you like coffee, they're wonderful, but if you're not a coffee drinker (like me), they're just really good.
'Ohana at the Polynesian is great if you're a meat lover. (If not, you're probably better off giving it a miss.) They bring 3-foot skewers of turkey, pork, sirloin, and shrimp to the table until you can't eat any more. The appetizers are very good, too. Depending on your timing, they have hula hoop contests and coconut races, and if you're there during Wishes fireworks at the Magic Kingdom, they turn the lights down and pipe in the soundtrack so that you can watch while you eat.
Spoodles is OK, but we preferred it back when it was a tapas-only restaurant (before our son was born, about 6 years ago).
We ate at the Yachtsman for the first time this month for my parents' anniversary, and it was one of the best meals I've had on property. It's pricey (as are all steakhouses anywhere), but it is absolutely wonderful.
As far as PS go, at that time of year, you should be able to get most PS on the same day. However, you may not always have your choice of seating times.
If you've got any special types of cuisines that you'd like to try while at the World, let us know and we can recommend specific restaurants.
Enjoy your trip!