Followup, based on your collective help (and a little research that confirmed your advice) we ordered the following to reduce power consumption:
1. Replacement LED brass dome lights
from marineengine.com. They have both red and white switches $325.23
2. 2 x 10-LED SMD Power Cluster Back Pin X-Beam bulb replacements for my halogen reading lamps from marinebeam.com $37.50
3. Four replacement brass-looking Victory Xenon reading light fixtures to replace the older bulb reading light fitures $212.14. These also have the G-4 halogen bulbs, I will replace these after I see how the marinebeam LEDs work.
Looking into a solar panel to supplement and charge our house battery now. Trying to see if we can surive with a starter
, deep cycle and a deep cycle spare. Fingers crossed.