particle か - Masculine and Feminine Speech - 行こうか and やめてよ

First, regarding 行こうか - is it masculine speech, like か in informal speech usually is? Also, does it sound agressive, again like normal with か in informal speech?

Second, is やめてよ feminine speech (as a command, if it can be used any other way)? I know that やめて and やめてね aren't feminine speech as commands, but some research indicates that やめてよ is. Please help.