Even FFHacktics concedes that you must be using 2.0. Are you sure that you should be using that for hacking of all things? For hacking you probably should be as accurate as possible if not just running it straight on the console, because we have too many patches that are only working in certain ways already. The FFVII retranslation is the latest of the bunch, though it has improved as of late.
Still, I mean if it actually works who am I to say no?
I remember reading that Duckstation has Multitap support, but I don't really do multiplayer. If it isn't there I would expect it sooner rather than later, seeing as how it gets commits at lightspeed. 
who's FFHacktics? my mistake, 1.7.0 is the version i use primarily

i remember trying to switch to the newer versions but i had issues with it not loading or not working how i want it to or something to that effect and i always find myself going back to 1.7.0. most likely to get some plugins working or i'm just a man of habit who's not in the mood to change i dont know. whenever there's a new operating system or new layout or new anything i usually am not eager to switch. i know many people love to experiment, to devote a weekend learning new shortcuts, new software and new phone features etc but that's not me. if it aint broke dont fix it that's my motto lol
the main issue i have with epsxe is that it doesn't play CD-DA audio tracks. usually when im working on my hacks with epsxe i would test it on other emulators too either it's no$psx, psxfin, pcsxrearmed, beetle psx, pcsxtrace, a Real Playstation, PS2, psp, the whole gamut
i typically dont do multiplayer either but on some rare occasions, 4 player NBA Jam is pretty fun if i can find players willing to join in. I would like to get some tournaments going too someday. And yeah some modifications work perfectly in epsxe but when i switch to beetle psx it crashes at a certain point, so it's good to test it on a wide array of emulators because ppl will be playing it on various platforms too