Hi Taffy and welcome to IIS.
Totally agree with othe comments so far. 1st two purchases would be a 2X barlow lens and a cheshire collimator, easier to use I find than a laser one.
Your lens so far give a magnification (assuming tube focal lenght of 1200mm)of
1) 25mm : 48X and
2) 10mm : 120X
with a 2X barlow you would get
1) 96X and
2) 240X
great deal for a small outlay!
One item that I have never seen talked about here are the Star Carts by Wil Tirion. Available fron most astronomical shops and Australian Geographic stores for about $25 I seem to remember. They show all sorts of goodies that will keep a learner busy for ages. I still have them on hand for when my computer battery dies. There are also similar charts for the phases of the moon from the same outlets and the same price.
You do realise that you have begun a long slow decline into the money pit we call a hobby.
Enjoy.
