As above - Bintel and Andrew's scopes are both made by GSO (as is my "Southern Cross" 12" dob actually).
Definitely YES get the Crayford focussor, or unlike soem others here (me included) you'll end up paying more to buy one separately later anyway, yes they are that good!
The basic included ep's will all provide reasonable views, especially at the price! Use these until you get more used to observing, ie getting yoru eye and brain "attuned" to what you are seeing anyway, then you will be a bit better prepared to spend more money, be that big bucks or bigger bucks, down the track.
You WILL need to learn how to collimate, and despite how well collimated it is when you buy it at some point that will change, be it before it's delivered to you or sometime afterwards. I strongly recommend you get a combination sighting/Cheshire tube (collimation tool) asap, ideally arriving with the scope.
I have also dealt with both dealers, each on multiple occasions, and I have found both to be helpful and easy to talk to. As I live in Qld all items have had to be freighted to me and have arrived promptly, well packaged, and in perfect condition.
A 12" scope is a
Wonderful observing tool, you are going to be blown away by what you can see in it! Do remember though that apart from brighter stars and the planets you will see everything else in shades of grey, not the colourful scenes you see in books and online. But you WILL see these objects in that scope!
Have fun !!!
