Yes, BK7 or "plate" glass does not make any diff for the mirrors. It comes down to accessories and level of support. Mirror fan, Crayford focuser (preferably with 10:1 microfocus), right-angle 50mm finder and a 1x compact straight-through finder like the Rigel are all highly recommended upgrades. (A Telrad finder is a bit too big for the 8" Dob.)
Besides eyepieces and the scope you will need:
- a collimation tool (I'd recommend long Cheshire/sighttube)
- planisphere
- charts/guides. I like the Southern Sky Guide by Ellyard & Tirion (<$25 from Bintel). Good one to start with and beyond.
- red torch (for letting you read charts and preserve night vision; preferably LED based)
- table & chair
- binoculars 7-10x, 40-50mm: fun to view the sky with but also essential for star-hopping (finding objects to point scope at).
Re eyepieces, to begin with I'd go for 3 or 4 GSO plossls from 10 to 32mm (likely included with scope), and a 2x barlow. Plossls < 9mm are very uncomfortable to use because of the short eye relief. Better use a barlow for high powers. GSO 2" 2x is the least expensive barlow I can recommend (the regular non-ED one).
Good luck!
