The 730 is very dated along with the rest.
I think you should look at machines from this list.
https://www.reddit.com/r/PCMasterRace/wiki/builds
Notice the GPUs used there are much more capable.
I want to be able to play a game like arma 3 mods and addons included with max settings while streaming. Currently I was looking at a pc with these specs:
•3.8GHz AMD FX-4300 quad-core processor
•1TB hard drive
•8GB DDR3 system memory
•Windows 10
•NVIDIA GT730 graphics
Doing hours of research it seemes like I need better hardware but, I do not understand all the terms and exactly what it is that I need. I do not want to just go all out to be safe and overspend on hardware and software that I do not need.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic