If the emulator is open source there is likely a Linux version, however the debug versions don't always make it.
Wine is an option for many things, definitely worth a go too.
I use Linux as my main operating system and have done since windows XP ended.
Microsoft Word... give or take the thread the other day about android versions of MS office I can't think of a hacking reason why libreoffice would fail you. If you are doing something where a single bit of errant formatting might cost you then I would hope you are using a proper typesetting program.
That said much beyond typing, spell checking, automated replacement of terms and word count I can not think of much why you would want Word and all its baggage. I often use spreadsheets as number manipulation but don't tend to find myself with a basic document editor when hacking as they are all too clunky for scripts.
Hex workshop and 010 editor at the two best general purpose editors I have ever seen, only really specialist stuff like https://www.x-ways.net/winhex/
comes close. You can get most of the functionality from free programs (mirkes.de tiny hexer, https://sourceforge.net/projects/hexplorer/
and might as well add , however notice open source was not necessarily part of that and thus that means Linux has a bit of trouble here. Hex workshop is also my general purpose editor of choice.
Bless is usually the basic Linux hex editor, and sort of in line with XVI32 if you lose the scripting or HxD in terms of basic but doable things. I have not toyed with https://www.openhub.net/p/heraia
(the other main choice for a basic Linux based graphical hex editor) in a few years at this point.
"Jasc Paint Shop Pro 9"
I have not use PSP since the 90s, maybe once more if it came bundled with a laptop.
It has Gimp though and it is wonderful.
Even better is Linux tends to have support for nice old drawing tablets that Wacom ended support for when XP was still current, but still work just fine.
"CloneCD, Cdmage, Virtual CloneDrive 188.8.131.52"
Sounds like you have a workflow going on there. I tend not to go for PS1 and such like as my everyday hacking which I guess is where many of those come in. Basic iso mounting is far nicer on Linux, all the complicated stuff which consoles bring to the table are probably harder (a few months back I was dealing with the complicated nonsense that GPS devices have since they lost the FAT32 lawsuit however many years ago, Linux allowed me to cut through it like butter in a way Windows never would have)
I keep three windows machines around these days.
1) Video editing. Avisynth is my weapon of choice for video editing, Linux has some great stuff in things like kdenlive but just can't find something with a workflow I like as much as avisynth.
2) Video capture. Mainly as I am too cheap to buy a new capture card and the one I have works really well for 90% of the stuff I want to do with it.
3) My little netbook. Runs XP, still has working activex, internet exploder, brutish old versions of SMB and what have you. If I am on site somewhere it happily talks to all the old routers, security camera systems and crap that people have paid thousands for and find underpinning their business or something that would be very expensive not to have available to you.
1) also doubles as my ROM hacking machine. I can look at things in a hex editor in Linux and often do, and do some basic cheat finding but if it gets serious Windows is still where it is at.
That said other than some of the really high end emulation aspects, even then it is not so bad as you are not necessarily playing and instead just figuring something out, a virtual machine is good for this sort of thing. Means your OS is basically a file and you can transfer it to new machines, back it up (so if you think something may break a system or take it down a path you don't want you can just copy it and have a backup or have a second machine to send down that odd path) and otherwise take it with you just you would any other file.
*these days with graphic card passthrough and CPUs have virtualisation options much of the "slowness" is people squeezing the VM to run in no memory and the system maybe not having enough memory to do the VM and a browser with 400 tabs open).
As others have said do go with a popular version of Linux to begin with. Also maybe avoid arch linux. Every time I see someone suggest that to a newcomer I wonder to myself if they actually don't want said newcomer to take up this Linux lark.