Hi Julian,
I have sent you a PM, suggest call me on my mobile.
WRT collimation, I have the Catseye tools and more traditional Orion cheshire so you can come around and have a go at using both if you want.
Re eyepieces, suggest "try before you buy" and proceed slowly
. I have plenty here you can try. Some better than others
The Canberra Astro Soc observing nights are a good opportunity to look at and through different scopes, mounts and eyepieces and see what works for you. Also a couple of members have barlowed laser collimators which are interesting.
Cheers,