Your naturaly hair color is very similar to mine. I too was golden blonde as a child and as I have grown older it has gotten darker, and darker and darker. I will tell you that it does not look red, but it does have red undertones and if I don't use an ash toned color, it will pull the red and my color will appear red and brassy. I always have to educate stylists on this aspect of my hair, even though you would think they should know.
I think you would really benefit from the curly girl method. You may find that even though your existing hair is not healthy, its condition can improve when you follow these methods.
Type 2B - 3A
Med-High Porosity (partial highlights), medium & corse mixed textures
CG Day 1: May 16, 2013
Poo: CJ Daily Fix Cleansing Condish (as needed)
CO: Tresemme Naturals Vibrantly Smooth Condish
RO&LI: CJ Beauticurls Argan & Olive Oil Daily Hair Condish
Styling: CJ Pattern Pusha or FSG, TRESemme Flawless Curls - Bouncy Curls Defining Gel, Giovanni LANaturals HardHold Gel (canopy only)
DT: CJ Curl Rehab, Coconut oil, SS Repairing PT
Techniques: Scrunch-n-pump, tshirt wrap