Nvm I put armur status hud into it and it crashed back. (I wonna try again but I will know in wich type of file the armor status hud need to be)
I believe you are able to obtain Optfine and Forge together. You need to go to .minecraft -> versions -> Optfine <version>. Copy the .jar file and paste it in the mods folder and it _should_ work.Forge makes my MC kinda laggy. Thats why I only use OptiFine