Yeah, with those upload speeds your stream quality would have to be somewhat low.
It would be doable with your current rig, but quality will definitely suffer with the speeds. Luckily ram is inexpensive now a days too and I’d definitely upgrade to 16gigs if serious.
The biggest advice I can give anyone looking to get into streaming right now, is to not get discouraged easy and just look at it as a hobby. Right now, it’s VERY hard to become partnered with Twitch for example since it’s been around for some years now. Becoming an established streamer is no easy feat, and I still view it as just something to do while I play games anyways.
There is a new competitor for Twitch from the creator of own3d.tv called hitbox.tv, and with Twitch’s recent changes some people may migrate there.
If you do want to get into streaming, I’d likely sign up on hitbox and stream there instead of Twitch since you would be on hitbox more so from the start than Twitch. Twitch is huge, and it was recently bought by Google too.
The only way to ever make money there as I see it now, is to be a legitimate pro at a game, or already a huge widely known youtuber.
Viewers are very hard to get, and followers are even harder to keep now a days with the already largely established streamers out there who do this for a living with sponsorship and prizes out the bung hole