Sure you can use the same setup for other games, but be careful to plan ahead before you start going crazy. Fortunately the arrangement I've chosen is very forgiving.
Don't worry, I guess I will work one game at a time, so if I need your opinion about somethin, I'll let you know.
I don't think your P1 Devils are right btw, not sure where you got those (other than from another game)
There is a FAQ for revelations on the site that appears to have most of the Personae stats in Tony's P1 FAQs area.
I'm working on the "Eternal Punishment" demonary right now, so don't mind those demons on the P1 sheet, they're from Eternal Punishment, but I made a mistake so I just copy them in the P1 sheet for a while.
Btw, I made some changes last night. You're already far ahead so it's up to you really. But I went ahead and merged the skill cells together because I thought it would take up less space. If you want to do it that way, just separate every skill with a semicolon and use something to represent a level with no new skill, ie. --, for example. You can leave off skills for the final levels if you don't know them or there aren't any.
If there's no problem with you, I guess I will keep the spells in one cell separated with semicolons for now. I will modify what I have until now. I will need help with some of the spell names from most of the demons/Personas, since I'm using "Google Traductor" to translate the pages to english, some spell names doesn't look well or have a different name, so I just put an asterisk on those spells that I'm not sure if they're correct.
Also recognize for names, the "English" name is basically a translation (probably the same as would appear in the Encyclopedia), the other names cells are for the Japanese name (in katakana) and the Atlus USA Revelations name. We will probably name the images after the English name instead of the Atlus USA name.
Ok, by now I just put both the English name and the Japanese names below the cell "English" separated by semicolons. I will take care of it in the future.
ALSO, I have a lot of empty cells by now, just give me some time to find the name of the items in english. I want to write all the "important" or "most easy to handle" information before putting things like the Returning Item, Flavor Texts and so on. But don't worry, I'll take care of it as soon as I can.