I think so.
There's an excellent chance these charges will be used in a family law setting when you are seeking parenting orders. I can't see you getting consent orders unless you accede to your ex's demands so you need to think carefully, look at how you respond to the allegations, review whether a change in behaviour is needed and plan your steps in advance. If you can do all that without a lawyer all is good.
Personally I don't like your chances of getting a good result unless you understand family law, what judges look for, and can genuinely initiate change through self-reflection. If you don't think you need to change, it tells me almost straight away you would benefit from hearing what a lawyer has to say. Some if it likely to be things you don't want to hear.
I don't care if all charges against you are complete fabrications, it tells me something about the person you are up against and I think you would benefit from getting help. I don't know if you are a tradie or a professional, an analogy here is if you are a sparky, can you put up a second storey brick extension to code, with all plumbing, plastering, carpet laying, painting, etc or do you need help? If you have time to learn all the regs for building, buy new tools and learn new skills, then DIY is likely OK for you. Lawyering is no different to choosing a builder. Choose the right one and life becomes easier, choose the wrong one and life is hell and you pay for the privilege/mistake.
What I don't recommend is having a go and then deciding it is all too hard then expecting a lawyer to get you out the hole you've dug for yourself. Once papers have been submitted it can be hard backtracking mistakes you may have made. A bit like trying to build on uneven and weak footings - not recommended as it can affect the final result.
At the end of the day it is your choice to make.