Nice work - I like the font styles you chose in #4 and #3...
I like where #4 is going. Can we try a version where there is a strong single letter H (slightly stylized) and underneath the bottom portion of the "H" you incorporate a roofline?
Can you also try a version with the H2O idea? Playing on the HRC but using H20 stylized?
For entry #4 can we try a version that gives a more "commercial contractor" feel? Something about the roofline on these seem to give a more residential feel? The subtle imagery in #3 is a bit more commercial...what if we tried a combination of both? Where the "H" is more similar to the "H" included in #3 -- but keeps similar layout as #4...again making the word "roofing" the word that jumps out instead of the "honolulu"