Clannad Visual Novel questions

I have a few questions about Clannad Visual Novel. I want to know how to finish the game ending up being with Kyou, Tomoya and Fuuko (if possible) but at the same time help Furokawa and get as many scenes with all the different characters as possible (dont wanna rush through the game).Not looki n for a detailed guide but rather an advice how to play through the game and how to end up with each character at the end without losing much/any game experience, also how to treat Furokawa during the game (ignore her or focus on her and to what extend) etcetc
I also want to finish Fuuko's stroyline and well possibly get a happy ending with each girl.
I stopped playing for now at the moment when Okazaki tells Furokawa that he loves her. Confusing cos even though i did focus on Furokawa i still wanted to have other choices with other girls (since i didnt really want to end up with Furokawa but more like be her best friend) and now its basically just Furokawa till the end. I also feel like i missed alot of scenes with for example Tomoyo, Miyazawa and Fujibayashi sisters. Even though i guess its not even half way through the game

Also i want to know if being with Furokawa is the only way to get After Story chapter.

I still have yet to start Ichinose's storyline, and thats why i dont like the idea of playing the game from now on as Furokawa's bf(cos correct me if im wrong but i think u only get that scene thingy where Okazaki visually appears for the first time only with 1 girl)
Unless im missing something and i can still play and end up with each girl if i choose not to embrace Furokawa that scene.

I never finished the game before but im willing to finish it a few times cos i got no better things to do
Its been years since i watched the anime so idk anyway i dont wanna blindly follow its plot
thankss in advance