Twitch Streaming & Youtube Gaming problems. The struggle is real....lol

What's up good people.

I've recently started a youtube & twitch channel in hopes of creating some fun and interesting content and sharing mine and my friends level of retardism with the rest of the world. And to hop on the bandwagon. Everyones doing it...so why not. I mean I like to play games, so if there are people interested in watching people play games...

Anyways.

So I keep running into problems. Which is normal. Nothing runs 100% smoothly. But I need some input.

I'd like to stream regularly on Twitch, and then create content for the youtube channel. A quick(er) way to do that would be to post whatever I stream directly to youtube afterwards. But I run into a ton of quality issues. Also I'm figuring out that my PC rig can't handle quite as much as I thought it could. So I'm going to have to upgrade.

My PC Specs:
- AMD FX 6100 Six-Core Processor 3.81 ghz
- 16 GB DDR 3 Ram
- Nvidia Geforce GTX 560 1gb
- Windows 7 Pro 64 bit

Capture Programs & Devices:
 - Elgato Game Capture HD for consoles
- XSplit for Twitch Streaming
- FRAPS for local capture
- Windows Movie Maker for local webcam capture
- Sony Vegas for editing

It's just a matter of figuring out what's the best way for me to do each thing. It's looking like Streaming and Youtube are going to have to remain separate things for now. And if I want to stream, stick to console stuff for now to not put so much strain on my PC hardware. And if I want to PC oriented stuff, then capture the footage locally using FRAPS and Windows movie maker and edit the footage in Sony Vegas and post that to Youtube.

I want to get back into fighting games and Halo really hardcore. So I'll be building a custom arcade stick that will hopefully work with multiple consoles (last gen & current) and then eventually a Xbox One. I've gotta wait and count my couch change after Christmas and see if I can snag that $350 bundle deal before it dies on January 3rd. I don't want to end up broke for another two weeks so I've gotta just sit & wait.

Okay. So I need a suggestion. I need a shotgun mic to record a room full of people for when I have friends over to record game nights. What would you guys recommend? Also for lighting. What kind of starter kit/lighting setup should I get to make my streams look more professional. I've got a nice 1080p HD webcam. I just need some good lighting and a green screen.

Thanks everyone.