Take online honor classes to increase UW GPA but decrease weighted ?

So after 3 years of taking AP/IB, my current UW GPA is not where I was hoping it to be(3.85). Would it be a wise idea for me to take a few online honors classes(I will still take AP/IB for my core classes) over the summer to help with my current situation ? Taking honors will increase my UW but they will decrease my 5.2 weighted GPA(honor has a 5.0 weight)
I am hoping to get into top 20 schools.

Probably, as most schools I believe look only at unweighted, but just look at your course rigour.