I just recently got a similar system : WO GT71 with 0.8x reducer flattener. I also have the asi183MC pro with a ASI290MM mini for guide.
Here is my first try with the system (... and any system) from last weekend of NGC7000. This was taken with a Optolong L-enhanced and quickly processed with DSS and photoshop. This is about 60 2min subs.
Please keep in mind that this is my very first astro imaging. I need to learn about astro specific processing as I am a complete newbie. .. but I am quite satisfied with the camera. Sure there are better cameras such as the ASI071 and ASI2600 but they are way more expensive. The ASI183MC has amp-glow quite visible on the darks but this was mostly mitigated by getting enough exposure time and using the darks during the stacking process.
For this system I am at 1.48 pixel scale.
Hope this will help in your choice. If you can afford you can also look at the ASI294, ASI071 (which would have been my choice for a more money).
By the way, I would advise you to get the flattener. My stars are round from edges to edges and it provides you with a slightly larger field of view.
Edited by cal1mero, 12 August 2020 - 04:48 PM.