@Winger98, Sorry, I've been out and about all day. Had to work out a delivery to my little brother so he can make me some money selling the gold coins we got from the recent release from the US mint.
Bench and Jkuts hit by far the biggest things.
In general, without knowing the exact things he's planning on streaming or composing or whatever... these are the general areas where you can "skimp" or ways you should go.
CPU - AMD/Ryzen all the way. Just the best bang for the buck (and I say this as someone who has only ever built with Intel. If the 5000 series wasn't out, the 3600/3600x would be a fine piece. Also, the Ryzen series come with a cooler that will be sufficient for what he needs. So, for a similar price to Intel, you could knock off the 40 for the Hyper 212 (which is a good fan if you go that way, if a little aged)
GPU - Right now, steer for clearer waters. Prices are coming down but it's still nutso.
Storage - 500 GB quality SSD at around 50-60. You can save and add the plate drives later at cheaper. 500GB is fine while you're building up.
Case - Either the Focus G that you had or the Cougar that Jkuts used are fantastic ones on the lower end of the budget spectrum. Much cheaper than those and you start seeing it in the build quality. I use the Focus G myself and it has everything I could need. Some pretty decent cable management options in it.
PSU - That $99 for a Bronze rated is really expensive and Rosewill is kinda ehh for them.
This is a guy who does know what he's talking about. This can kind of be a good resource.
JayzTwoCents is super knowledgable as well.
Also...
A couple reddit pages would be helpful for you too.
r/buildapcsales - Finds potential sales for items that you are selecting that you want to put in there. Just aggregators of deals from legit vendors.
r/hardwaresales - Reddit version of craigslist. I've had fantastic luck with this. As always be cautious, but they do tend to do a pretty good job rooting out the scammers and scalpers
r/buildapcforme - You could go there and ask the same thing you’ve asked us and provide the things he wants to do and budget. They can tell you if it's realistic and/or what needs to happen to have it be realistic.
wow, I must have been tired writing that up