The eyepieces that come with your scope will do nicely. The only thing you might want to add is a 2x barlow and, if you want even more flexibility, a 12mm GS plossl. If you get a 2" GS barlow, get the ED model rather than the achromatic one. (Don't know if Bintel stocks these, but they were $110 from myastroshop.com last time I checked.) In the 1.25" barlows I'd go with either the Meade #140 apo, or the Televue 2x.
Upgrading the 32mm to the 30mm superview is worth considering for $20 (but no more) but do not expect good edge performance from either EP in the fast Dob. The 30mm Superview works well in a 2" barlow (much better edge sharpness than on its own) and the extra field of view is nice, but the 15mm plossl will be more suitable for planets and faint fuzzies. So don't give up the 15mm, because it is a very useful focal length for deep sky and for planets in a barlow. Ditto 12mm.
Even if you decide to upgrade your EP collection later on, these basic EPs will come in handy when you are showing off the sky to your friends with dirty paws.
