i need modding help

[axel_rawr]

so,i really like attack of the b-team and i like shaders,but i have yet to actually get them to work well together
i have all the right things put in for the regular attack of the b-team,and it crashes when i launch a world
without optifine it just lags the entire game,even the menu
and this is all purely for personal use
i also fine that a lot of other modpacks i want to use optifine and shaders in don't work well at all
honestly,i'd like to find a way to get these all working together,even if it means having to put together my own pack(purely for personal use) under forge or something and run it myself,but i don't know where to even begin,so i was hoping for some help
and i'm sorry if this is the wrong forum