system
A chat on subreddit /r/pcmasterrace
human
no to literally EVERYTHING you just said. 

this is a perfect opportunity to use a soldering iron. clean the pads put flux on the pads, hold the cap in place with tweezers, put a small blob of solder on your tip, then simply tap the 12V side first, since it will have a drastically lower thermal mass than the GND side. once it's on, tap the gnd side and you are good. 

hot air is going to dump a bunch of unnecessary heat into the board, which for a person who does hot air rework for a living isn't a problem ,but for a home gamer, you risk overcooking your board. 

source: I do this for a living
gpt
I was worried I was being dumb! I do not do this as a living, but I used to. And I was thinking, that's a big old 0805 capacitor. For me I would do that instantly with a fine tip soldering iron, not a hotter reflow gun. It only has two legs! And there's no chance of burning it out with a reasonable amount of heat time! I pretty much exclusively use my hot air reflow gun to desolder large chips. And I guess I would use it also to solder on ships that have unaccessible pins below them or ground plane heat sinks.