It shouldn't take more than an hour, of course you just need to change an entry. But I fear I have heard complaints of i3 not liking the plasma panels but that

It shouldn't take more than an hour, of course you just need to change an entry. But I fear I have heard complaints of i3 not liking the plasma panels but that was under different compositors, should work fine under compton, :D P.S: You can use i3 as your window manager in Plasma desktop without too much hassle. You just have to tell it to allow i3 to manage windows instead of KWin