Instead of Chifa, I'd recommend going over to Amada (another of Garces' restaurants, and I believe that was his first in Philly) and get the tasting menu (we got the $65 one). I had it back in November, so the details may be a little fuzzy. The highlights were:
Oyster shooter - Kumomoto Oyster with some sort of roe. I can't find it on their regular menu, but I remember it was very fresh.
Cheese plate - GARROTXA w/ Garlic Dulce de Leche was the highlight here. The garlic dulce de leche was not spicy, but more like carmelized garlic.
ALBĂ“NDIGAS - Lamb Meatballs & Shaved Manchego - Very light meatballs with a truffled cream sauce, and fresh peas.
PULPO A LA GALLEGA - Spanish Octopus - I remember these were like little thin disks of octopus with a good amount of smoked paprika. Tasted like octopus bacon.
PERNIL ASADO - Roasted Pork, White Beans, Arugula & Orange - highlight of the night. Was a very rich and tender roasted pork with crispy skin, sitting on a bed of creamy beans.
I second hitting up some BYOBs as well, highlights being:
Matyson - I went there for an early New Years Eve dinner a couple of years ago, but I remember excellent, simple food.
L'Angelo - a very small Italian restaurant in South Philly. Their gnocchi was light, and the grilled octopus tender. This is a VERY neighborhood restaurant way down Broad street close to the stadium, but it's worth it. One of my favorite restaurants in Philadelphia.
Marigold's Kitchen - Never been, but it's on my list. Heard lots of good things about their "modern" cooking - doing the whole molecular gastronomy thing.
Also, Philadelphia has a great beer scene, the highlights being:
Monk's
The Irish Pol - I think 30 or 40 beers on tap, many local ones.
Euology - Belgian beer
If you get a chance, head down to the Italian Market and go to Di Bruno Brothers. Lots of cheeses and meats, get whatever is to your liking, and some bread, and sit in the parking lot in front of the huge Frank Rizzo and Di Bruno Brothers murals. Now THAT is a VERY Philadelphia thing to do.