My ale pail holds 7+ gallons, so I can easily do a 6 gallon batch of wine. You won't get much activity with wine, so you don't need as much headspace usually.
The Cornucopia kits are "ok". I saw them in our local discount store a few months ago, and for $19.99 they were ok. I made several of them. But I'd never pay more than $30 for them.
A good beginniner's kit is Vintner's Reserve. They are usually in the $65 range, so they are "low end" kits, but they are pretty good and make drinkable table wine, probably similar in quality to a $5-7 bottle of commercial wine.