I mean you can literally have a timer going on your phone so you can see your "final time" if that's what you're concerned about... They do also make timer apps for mobile which people do use.
If you're talking about doing LBLJ, part of the thing thats gonna save you time in the route is doing those specific stars since they are faster. If you're not confident in stuff like that to start, just do the No LBLJ route. https://ukikipedia.net/wiki/RTA_Guide/16_Star
Short answer: no. Have to get the official WAD for anything attempted on VC. Always check the rules, my friend.
Emulators are not banned by Speedrun.com, prime example being Super Mario 64. Thing is a question like this needs to be asked to the community directly because the communities are the ones that decide about emulator usage. That being said, this is a Flash game so there's not really going to be an "emulated version", but you really should be talking with the Papa's community about these questions you have.
Best to look at the resources for the game since that's where they'll put things like autosplitter and load remover tools and if you're still unsure about something, you need to talk with that community in particular whether you do it on the game's forums or in the community's discord.
You need to talk to them about anything Co-op, not here. This is vanilla.
The hack has its own boards.
You need a bad rom in order for that to even happen in the first place and the guide does list the checksums you can verify with. Even if thats the case, Rosalie's Mupen is the alternative if you don't wanna be super paranoid about it.
Simply put, no, not if you want to get a run verified on the leaderboards. There are 3 emus listed in the rules. If PJ64 1.6 isn't working for you for whatever reason even after double checking the pj64 setup guide, try Rosalie's mupen. You can also join the discord for actual help with setting stuff up if need be.
https://www.speedrun.com/d2lod?h=Co-Op-normal-8-man&x=zd3qgvnk-0nwpjqd8.5lm00dy1-6nj5d1el.zqo6k05q just need to look at whatever boards to see whats available.
Duplicated you added in 1 extra star because you forgot to account BoB star.... I beg of you, Poggers, to go to the mario speedrun discord and ask questions there because you'll get better advice. That being said, if you don't have the Usamune Practice ROM, you should get that to actually practice the CCM stars more effectively. They're really not bad.
Counterpoint (for most likely a bot post lmao): internet for people can be dodgy and feeds can cut out intermittently and capture direct on console maxes out at 1 hour, which gives 1 point back to capture cards since local recording would save a run with intermittent internet. On top of that, having a capture card allows people to actually show timer on screen through programs like OBS which can be an important thing for load removed times without having to play back the run a second time. Then there's the obvious issue of older consoles that don't have these capabilities and that's all I really need to say.
even now there's OBS stuff that lets you record separate feeds without needing a second instance of OBS open
Yeah there's the online tools like posted above and then something myself and others use with what you've been doing is downloading the files with YT-DLP and then double checking time in either Amarec or w/e software editor you use. Nice thing is with the YT-DLP program, you can set it up to download multiple videos at a time instead of doing 1 at a time.