recommend a theme for me please?

I need to find another theme after setting everything up in this one I find I do not like the second sidebar and cannot remove it.

What I need:
widget ready
easily customized
large header space to fit my current header
and all of the other cool stuff I probably don’t know about because I am just the average girl next door hacking away at trying to set up a site on my own.

Help? Please?
https://www.coupongirlsnextdoor.com