GMC 4 head lamp system ?????

[GMC Jim]

The original headlamp configuration consisted of :-
Outside -- #4000 - 37.5 / 60.0 watts -- (Hi-Lo Beam)
Inside -- #4001 - 37.5 watts -- (Hi Beam)

Total wattage -Hi Beam = 37.5 X 4 = 150 watts
Total wattage -Lo Beam = 60.0 X 2 = 120 watts

Replacement lamps - per Lighting catalogs :=
Outside -- #H5006 = 35.0 / 35.0 watts == (Hi-Lo Beam)
Inside -- #H5001 = 50.0 watts == (Hi Beam)

Total wattage = Hi Beam = 35/50/50/35 = 170 watts
Total wattage = Lo Beam = 35/35 = 70 watts

This configuration gives only 70 watts on Lo Beam which is a 'downgrade'
compared to original 120 watts. I plan to replace the #H5006 (outside
lamps) with the original #4000 for additional brightness on Lo Beam.

So---- What do you GMC owners suggest ???? I realize that Hella and other brands would be an answer; using H4 60 and 55 watts bulbs. My night driving is limited so I feel that the cost of Hella replacements is not practical. I do apprecaiate any and all suggestions........!!!!!
Note:- I will be replacing wiring with 12 guage, relays and auto-reset circuit breakers.................Jim