You are spot on with your comments. The garage door opener motor use can be controlled by us, the other motor is the water pump which is also intermittent and we can control how often we flush when the power is out so the 115ah battery will supply for 12 hour outage easily, especially with a little help from the solar panel. I currently have a power meter connected to the fridge and will use that info to estimate the daily draw from that and whether I need to increase the panels or the battery pack to accomodate.
I am leaning to add another 150w panel (monocristoline) for at least the advantage of reducing the voltage drop. To keep a 2 % limit on voltage drop, the wire sizes become huge and the controller I bought will handle 24v even if i am charging a 12 volt battery. That means that I can increase the efficiency by connecting another one in series (24v) and getting the most from the 8AWG I have. Especially since I am looking to possibly expand the system that will give me 30 amps where wire size becomes critical to distance.
I have to consider that the wet cell battery I have doesn't like to be depleted more than half so for the extra $1900 pesos to buy another 150 panel, I will increase the efficiency to a 24 v system, and add another 10ah =20ah total and that should be pretty good.
The question about sunlight hours, and not daylight hours, helps to estimate the output of the panels on average for design of the system. Once I have it set up, I will be able to monitor and make any adjustments, the fewer the better, because components are expensive ...laugh.
Thank you for your input.