If you're starting out with Astro Imaging, you'll find it frustrating enough with just a straight forward rig, learning drift aligning, guiding, the inevitable problem solving of hardware and software, and then the stacking and processing.
Do yourself a favour and make the learning curve an enjoyable experience. The ED80 can produce spectacular images. You won't regret the purchase.
And when the time comes that the whole process becomes second nature, then it's time to challenge yourself with something with a bit more focal length.
The ED80 is a keeper. You don't see very many of them on offer in the IceTrades do you.