Amy
So it is one of these?
http://shop.australiangeographic.com...ope-150eq.html
Looks like it only has the 1.25" focuser, but if it was me I wouldn't buy any eyepieces until you know what you want.
If you are seeing the spider vanes in the image, you are actually defocusing not zooming. The only way to "zoom in" is to use a higher power eyepiece (ie: the 10mm rather than the 20mm). As a rules if the planet is as small as you can make it you are achieving focus.
Actually I will correct myself, it is possible to buy "zoom" eyepieces that can change focal lengths. Some observers love them, me I prefer stand alone eyepieces.
How is the Red Dot finder working now?
Malcolm