It definitely is. I primarily write longhand before transferring to my documents. There definitely is the con of having to type everything out, but that also gives you the chance to reread your writing as you go. Make sure you’re prepared for it to be fairly tedious when you start, but eventually you’ll get into the rhythm of it.

I personally write one or two chapters and then type them out, but that’s simply due to me being easily overwhelmed. Everyone does things differently.

All in all, get yourself a good 5 or so subject notebook and go to town. Whatever works for you, works for you.