Will this help my hair grow longer?

I think you are doing a great job. The only thing I would say is ditch the gold plated curling irons and use a ceramic one like a Chi. The gold n hots are more prone to burn the hair shaft and that will take away from all the good work you have been doing. Sleeping with a scarf or bonnet is cool, but if you want your head to breath a little, you can invest in a satin pillow case.