Get your ME/IR done first.
1. It will mean that you have a get out of jail card if the weather turns nasty and you can teach certain lessons VictorMike on top(before the slanging start no suggesting every type of student and/or lesson can be done in this way but some can.
2. You will be a more experienced pilot before you instruct.
3. If you intend to do any other type of commercial work you will need the ME/IR to even apply.
You should be able to negotiate something off training where you work but some schools are notoriously more stingy than others.