Going blonde

While I understand a person's desire to color their own hair (more cost efficient,  people are gentler on their own hair than a stylist would be, etc.) I think anytime a person is dealing with a botched color,especially those involving bleach they need to seek professional help. Once bleach is applied to dark or colored hair to strip color, especially artificially darkened hair, it can be etremely fragile not to mention unpredictable. I am guessing your hair must be relatively healthy and strong considering it is so long, so do yourself a favor and go to a professional to at least get you started in the right direction if you want to continue to go blonde. Then from that point on, it should be fairly easy for you to color your regrowth yourself. I have been in similiar situations as you, I have tried almost every color in the book before going back to a light blonde color so I know the issues you are facing. Unfortunately, my hair is not as strong since it is naturally fine and I have had to deal with breakage in the past after having bleach applied over already bleached areas. If you love your hair and want a "natural" color, not a orangey or brassy blonde, I implore you to consider going to a colorist to at least even out the color. Once you do this you can purchase the necessary products to touch up your roots at home.

I have colored my hair for years, won't give you the whole story, but I recently went red.   Time to do a touch up, decide I want to start from scratch so to speak to go out and buy some color remover. 

Worked great, except for the very edges where it dried out a bit, it's lighter, but not as light as the rest of my hair.

So I decide to try peroxide to the darker areas. It lightened it up.   Now I've started to notice, probably occured when I first started this whole process that the very top of my head is really light, then it goes darker, almost a red tint to it, then gets light at the end.

probably from how I twisted it up to keep it out of the way, I have mid-back length hair.   And I did use 2 boxes.

So my question is, can I continue to use peroxide on the rest of my hair to get it all one shade?  Or should I go out and by more color remover?   Or just go out and buy the shade I want in blonde which should cover any nonuniform blond coloring?

Thanks