jacksdad

Just be careful with panels, what you get today, you will not get tomorrow. Panels are changing all the time with new spec panels coming out almost every day. You will be lucky to get the same panels in 6 months, never mind 2 years or longer down the line.

There is no cost to the SSEG application itself, however, the requirements to complete the SSEG include engineer approvals, diagrams, component specs, etc. which require time and effort. Some installers may not have the capacity or inclination to do this on behalf of the client. At the end of the day the onus is on the client to ensure that it is done and will cost the client no matter who does it. 

Just about anywhere in CT, Lighting Warehouse, Eagle Lighting, even Builders. I've found that the Eurolux ones are reasonable quality. When running off inverter, some of the cheaper no-name brands tend to dip a bit for a millisecond or so when the fridge or any other high draw appliance kicks. Apparently to do with the inferior quality capacitors that they have inside them.

This....as soon as possible!!!
LED's are the way to go, I've replaced every globe in the house with LED, biggest draw from the largest is 9w, most of the others pull 3 or 5w, halogen's are minimum 50w some even more. 

Kettles draw a lot for a short time. Especially if you boil the water you need & boil it once*. So they are not too bad, but you need to keep an eye on peak load. 
The oven will draw a lot of power for a longer time. If you don't split the DB then so will the geyser. 
There are two potential problems: you could overload the inverter, and you could drain the battery too quickly. 
Split the DB. Keep the stove on the non-backed up side. Or buy a full gas stove, then you can run it on the backed up circuits because it will take electricity for the oven lamp, maybe a fan, and for the igniter. That's fairly trivial. 
 
 
* I am not naming names, but I know of households where this happens 
- get up. Fill the kettle. Boil it. 
- have a shower. Boil kettle again. 
- get dressed. Boil kettle again. 
- check social media. Boil kettle 
- go outside for a smoke. Boil the kettle again. Make one cup of coffee. 
 

Sorry, didn't read your first post thoroughly, my bad.