I'd get rid of the 7" Hellas to start; their beam is too low (and narrow) on lowbeam and too high (and narrow) on highbeam.
If you want to stay with H4, get a set of Cibie reflectors; the spread of light is much wider and without significant peaks/valleys in the LUX.
Look at the photometry reports and compare the Hella:
With the Cibie:
The difference is dramatic. A good set of bulbs like
these if you have decent wiring or
these if your wiring is suspect ---- helps even more.
Or you can go LED or HID. Any of the lights in my
shootout would work for you (except the bad ones like the IPF).
To supplement the lowbeam when driving SLOWLY and/or in very foul weather, a set of foglights will help. Since not all foglights are created equal, choose well.
Daniel Stern sells some good Cibies on his site --- and the
Hella Micro DE is a great "stealth" foglight.
To supplement your highbeams, I'll stick with the Hella Rallye 4000 100w halogen, Cibie Oscar, or other quality light. Run them only with highbeams.