Not a direct answer to your question...but for 'orbit visualization'....
System's Tool Kit (STK) from AGI: https://www.agi.com/products/stk There is a free license for non commercial use (e.g. Ham Radio.....). With this you can quickly pull in TLEs for the spacecraft of interest and get very nice 3D and 2D displays to visualize orbits. You can also do things like run pass predictions ('accesses' in STK speak), get high time resolution az, el, range, and range rate (for Doppler and link analysis math) reports (in CSV format), and they have lots of tutorials for getting up and running. What you *can't* do with the free version is incorporate things like the Comm toolbox for direct antenna pattern visualization and link analysis within STK. From experience during my Master's work, the combination of 'free STK', 4NEC2 (and outputting theta/phi/Gain matrix), and Python can be a pretty powerful combo.....but lacks the 'visualize' part unless you want to code that up too....
The General Mission Analysis Tool (GMAT) is the free an open source competitor to STK from NASA: https://software.nasa.gov/software/GSC-17177-1. I have less experience (...i mean no experience...) with this package, so not sure how easy it is to use and whether or not is has antenna modelling features, but I know a lot of folks use it (including folks on this list) for orbit modelling.
Finally, speaking of Python, the skyfield package (https://rhodesmill.org/skyfield/) is a great way to 'get rid of STK' for your own projects. Skyfield provides a baked in SGP4 propagator to handle TLEs. That, plus modules such as pandas, matplotlib, openGL modules (for good graphics / 3D visualization), could make for a pretty nice package that gives you full control (and is free).....but this is a double edged sword as it would all need to be coded up, which can eat precious 'project time.' (I mention it because its somewhere way down on my project list...and there might already be something out there on this).
Hope this helps!
-Other Zach, KJ4QLP (the Zach with the Hat).