Maybe I'll buy one replacement 1157 LED bulb, one instrument cluster bulb, one reverse light and one front turn signal. If they are bright enough with my current electrical components in the system then I'll complete the set.

I dont think my headlight housing's will accommodate an H1 or an H7 bulb. Sounds like a whole different beast of a headlight enclosure. AFAIK the only replacements for the 5001/5006 sealed beams are the H4 lamps themselves.