So I love a pixie and I think it is such a easy style.
But I feel you on the growing it out part I felt like that when I had my bob. Your hair probably grows a lot faster than mine, but I understand the struggle.
I think sometimes when you are growing your hair out, you can return to your hair dresser to get them to neaten it up so It looks like it's at the length you want it to be instead of awkward.
Either that or some linked extensions.
It's important that you do what you think is best for you and manageable for you, because if the goal is to grow it out, now it's the time to show it as much care as possible .