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The finder scope will not by default always be lined up with main scope. so..... get your biggest eyepiece 30mm??? or 40mm???, line up the cross hairs on the finder scope on say that bright star (west would have been venus early in the night, sirius is early hours of the morning east), then look through the scope, move the scope so that the bright star is right in the centre. without bumping the scope, look in the finder again. the chances are that the star has moved. there are two screws that you can turn with your fingers to adjust your finder. Move the screws until the star is right in the middle of you finder scope. have a look again thru your main scope and see if the image has moved, realign again in the big one and then check the finder scope. This way you can align the finder! repeat and work your way down thru the eyepieces, 40mm, 25mm, 15mm, 9mm. that way you know that if you see something thru the finder, you can catch it thru your 9mm.
movement does take a bit of getting used to.
2" eyepiece are very good, but more expensive. also if you are moving to imaging down the track, i think finding attachments for you camera would be very hard and expensive. The 1.25" eyepieces are more common, less expensive.
I would suggest keeping both. The 2" will be great for locating stuff ie galaxies. if you have checked you star map and found that a nebula or galaxy is in the area, use your 2" to find it as it has lovely wide views and then zoom in, with your 1.25" eyepieces for detail. Thats the way i do it.
Yes you can get barlows for 2", but of course more expensive.
the filters are ok i spose, maybe the red one on mars, but i reckon you will not use them much as you go all.
well done, it sounds like you are one your way
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