Go through with the CFI/CFII/MEI and instruct as much as you are comfortable with. If you want to get to an airline asap, then work your rear end off. If you aren't in a hurry, take your time. Either way, be in it for your students and their success. Don't instruct to put hours in your logbook, you will be doing yourself, and more importantly your students a disservice.
For the multi, find someone to split time with, beg borrow and steal multi students, at least where I am, they are hard to come by. Most of mine have been previous students who were on the fence about it, so I had to convince them to go through with it. I fly a twin out of a small local airport now and then for a small business, and when I can afford it, will split an hour or two with a friend either going somewhere, or shooting approaches.