Hi and
, I would suggest a 15mm and 20mm GSO Superview from Bintel , these are very good eyepieces and would go well with the 10 and 25mm ? eyepieces that your scope came with .
Your scope has a 2 inch focuser ? if so the next I would suggest is a 30mm Superview , all done for well under $180
. as there is no need to spend thousands just now ( that's easy to do
) , the SV's are awesome .
Brian.