First, may I ask, why do you and she want to make soap? What is the goal? If we knew that, we could probably steer you a bit better.
I never even considered going the MP route. I went straight to CP as I wanted to control the ingredients. I see no benefit to trying HP first, as you will soon enough be rebatching.
I am not saying anything bad about MP, as I simply have never tried it.
You said you are all set up except for supplies, but what about equipment?
Also, you and she need to watch plenty of YouTube videos for whatever method you choose before trying the first batch.
And, if you are going to make CP or HP, you need to be on good terms with SoapCalc or another reputable
lye calculator. Start running every recipe you see through it. Even if you don't print and make the recipe, you need the practice. And, when you start to make soap, you will still absolutely need to run every last recipe through before making a batch. No exceptions. I don't care who or where you get the recipe from.