Definitely go for it man. You can even dip your toes in and use your consoles built in apps along with your headset before deciding to splurge on anything else.
On your PS4 you have Youtube and that’s great. I wish the xbox had that. On the xbox you have Mixer and you can simulate having a fancy setup because of the lightstream partnership. You can add, overlays, scenes, custom sounds for follows, host and so on. It really helps you build a place that is your own so you. Your theme could even easily be FotNS and your current punching gif could pop up, you could add a soundclip ofn watah wathah watah watah with a brief message that says /user name has hit the follow button with his Hundred Crack fist technique. Then you also have FTL, faster than light and this is the key feature for interactivity because it allows you to respond to chat faster and it allows your viewers to hear your reply instantly. Another cool featurenis co streaming, you can have up to 4 simulcast streams with any game but i personally find that annoying and prefer to only watch when all participants are in the same game for a deeper experience, 4 PoV’s and it’s great when a team is on point and gelling.
Most importantly though, regardless of which app you use, I highly recommend talking naturally even if you are the only one watching. Talk about what you’re doing in the game, what you think is going on, how things work, if it segues into a story then tell it. This way you have a steady dialogue going and it’s more welcoming for anyone just tuning in. That way you don’t have a scenario where you were quiet for 30 minutes and the randomly say something and catch them off guard. Oh and don’t call out lurkers, if you see a name in your viewer list just let them open up and say hi when they are ready.