I would advise against that many 0 levels. If you have 7 players, let them have 2-3 at max. 28 characters will pretty much mob anything (maybe you're familiar with the term "Zerging" from online MMOs). Plus, it'll be very tough to keep track of. Probably not much fun. IMO.
We actually cut down my party significantly in size last night, everybody's just running 1 character. They're all level 2, now, so there's that difference, but we have a Cleric, an Elf, a Thief, and a Dwarf. It worked quite well, was a LOT faster to play, and easier to keep track of stuff, I think.
As for DotSK, it's a great module and would probably work well as a funnel. But you may have to tone down the Wolf some. It's quite capable of slaughtering even such a large horde of 0 levels.
Don't dismiss Portal Under the Stars... it's a great introductory adventure, and I had a lot of fun with it. There's some cool items in there too that can tie into other adventures.
Hamun Ry (Wiz 4)
Str 10 Agi 15 (+1) Sta 11 Per 11 Int 17 (+2) Luc 10 (Unholy House). Align: C. AC: 14. HP: 13. Melee +1, Ranged +2. Crit: d8, I. Save: Ref +5, Fort +3, Will +4.
Spells: 1: Choking Cloud, Comprehend Languages, Detect Magic (odd crystal growths), Magic Missile (mirror images), Runic Alphabet (Mortal) (ravenously hungry), Ventriloquism (rain of frogs)
2: Detect Invisible, Levitate (extremely difficult, d14), Mirror Image (20% chance to raise/lower luck by 1d3 points).
Equip: Ring of the Sand Djinn: +2 AC/saves, Invisibility for 1min/spellburn point, or unmake for great, unknown effect. Padded Armor, Longsword, Longbow, quiver w/20 steel-tipped arrows, 10 silver-tipped arrows, backpack, spellbook, quill and ink, sturdy parchment (10 sheets), 5 days rations, high leather boots, belt w/ belt pouch, gray robe, dark gray hooded cloak. Also carries 3 small mechanical toys: wind-up mouse, wooden puzzle cube, small jewelry box that plays a little tune.