Hi Jase and
Straight into Astrophotography eh ?
We normally warn 'new guys' about the slippery slope into the black abyss of astrophotography but it seems too late for you already.
So welcome to the abyss
I'm a long time serious amateur photog with many cameras used over many years but I have to say that astrophotography will teach you a lot more about the craft than you thought possible. It will delve into areas of technology and understanding that you did not know existed.
Best advice, take it a step at a time, don't hurry the process. Try the true and tested widefeild and planetary\lunar movie stacking exercises before you hand over your credit card for more hardware for guiding, scope control and cooled cameras.
Ask questions on here, there is a wealth of experience and knowledge to tap into and all will willingly share their expertise and encourage you to learn.
And most of all, enjoy the journey
Cheers
Brent