Wow, you played thru 3 of the routes, well there are 5 imoutos and a harem route on imouto paradise, so your kinda half way thru the game, not sure right now but i think i didnt play rio's route cuz i think shes freaking annoying, but thats the only one i didnt play, the other imoutos are sweet as damn so i couldnt help but play em.
About the arrangement thing, ill tell ya i dont even know what "arranging" is, from what i read on the internet i assumed it was something like adding stuff on the song, but i dont know, that was just a quick reading on the internet, and about "transcribing" i assume it is simply tabbing, well if theres any imouto paradise song you want help with, ill be glad to help just tell me which songs and ill try to help you in any way you want. Be honest with you first time i got my hands on a instrument was around 8 months ago so im still a freaking noob.
Hmmmmmm i wonder what songs you working at... "ordinary day" and "agressive H-scene" are cool as damn, well i wont know till you tell me.
About what program i use for my tabs, well, i use notepad.
EDIT: michika is the best freaking girl of the damn visual nov---- whoops