Have you done the two substances alone enough to be familiar with the effects of each? If not I'd highly recommend that first. If so, while I prefer to take one or the other, I have done both a few times in the past. You should expect the great visuals the L will give you and if you time it correctly the beautiful waves of butterfly's and euphoria of the E will enhance it that much more over the peak, I find it to just be an extremely euphoric, sped up acid trip. It can get confusing and mind fuckey to one who isn't prepared so be safe and enjoy