you know, youhave a good range of mid-priced eyepieces already and if they come to focus you should be set. alot of people like to go for wide angle (70-80 degree) eyepieces tho cause dobs generally dont track. I could sugest a 31mm nagler but its not exactly mid-price range... how about a pentax?
anyhow, welcome aboard. people will be coming to your rescue soon