Good luck on your venture! I contemplated doing the same thing but with the megaman games this year, which would definitely be a lot easier. I got to mm3, but decided to take a break.
I think every one of them is on Steam; not sure if Megaman 8 is on there or X7 tho
"Salt cures Everything!"
My YouTube: https://www.youtube.com/user/Nirakolov/videos