Hi Warren,
I'll leave it to the more experienced people to give you advice about eyepieces but I just wanted to say that bino's are really great for astronomy, and I think that it makes a big difference to your ability to see stuff by using two eyes.
I know that I used bino's for years before getting my scope, and after I got the Dob I didn't pull them out again for a couple of months. I had them out a little while ago, and it was brilliant to just scan up and down the milky way with them. I don't how to explain it, but although I can see fainter stuff with my scope, when I look at the brighter stuff like the milky way in some ways it looks brighter and more starry with my bino's
A bino guru from the US Philip Harrington says in the intro to one of his books that "many observers enjoy up to a 40 percent increase in the contrast of hazy objects merely by using both eyes" and "It is not unusual to experience a 10-percent improvement in perception when viewing with two eyes instead of one".
My 15X70s plus cheapo camera tripod are gonna be my 'grab and go' scope for a long time to come
Kind regards
Ant