The cheapest 144hz that I can verify is good is the AOC G2460PF. If you want much better colors and brightness the 25 inch is what I personally use.
This is exactly what you're looking for. It was one of the original 12 to be gsync certified. I have one, and it's amazing. https://www.amazon.com/dp/B07D377Q6D/ref=cm_sw_r_cp_apa_i_4jxXCbAQT7A8F
E: I now realize that's what you posted. I'm a dumbass. But this is a good monitor.
>I’ll probably just get the G305 with an Energizer ultimate lithium AA battery, so thanks for your advice.
Hey no problem, I hope all goes well. But I would urge you to go for the AAA with a converter. With a AA, the mouse is really back-heavy, which would be especially annoying with a claw grip. With a AAA in a converter, it's much more balanced. Here is a link to the ones I use. $6 for an 8-pack and two day shipping if you have prime. This mouse uses such a miniscule amount of power that the loss of battery life isn't even a problem.
Probably either a GSkill Ripjaws (https://www.amazon.com/RIPJAWS-KM780-RGB-Mechanical-Keyboard/dp/B015YE7II8/ref=sr_1_5?s=electronics&ie=UTF8&qid=1509806710&sr=1-5&keywords=gskill+mechanical+keyboard) or a Corsair K70 (https://www.amazon.com/CORSAIR-K70-Mechanical-Gaming-Keyboard/dp/B073XW69VB/ref=sr_1_9?s=electronics&ie=UTF8&qid=1509806595&sr=1-9&keywords=corsair+gaming+keyboard+mechanical) those are probably what you are looking for. but I dont really know. This is the sort of stuff that you have to invest more time into. That is if you are willing to make sure that you have what you want.
I don't know what you mean by Screen Tabs n=but you can always go for the Hyperkin Smartboy. https://www.amazon.com/Hyperkin-SmartBoy-Mobile-Device-Android-Version/dp/B072FRQZ65/ref=sr_1_1?s=electronics&ie=UTF8&qid=1507497283&sr=8-1&keywords=hyperkin+smartboy you can get it at this amazon link here for 50 dollars. Which is kinda a stretch but depending on how much you play emulators, it could be worth it.
Are you okay with having two different pair of headphones?
Because a 7.1 virtual surround could help you greatly with identifying the precise area in CSGO. There is a good list on the following link.. {Note: the V-Moda Crossfade Wireless are a great pair of headphones that are on this list. For both music and gaming [according to the link]}
For music you could get another pair, if you like bass and are okay with the earbuds rather than larger headphones, I would suggest getting the Sony In-Ear Dynamic Headphones MDR-XB50-B
Also, I would suggest turning to r/headphones for such queries, users there are more knowledgeable about such stuff
Hope this helps
Here is probably one of the best ones for about $35