Hi RC
Re: your question on jobs for Electricians in Brisbane. I amnot an expert in this are but did a quick search on MyCareer
http://mycareer.com.au/employment/brisbane/trades/electrician-jobs. As you can see, there quite a few jobs available and the salaries are VERY good ($60-$80k or more!).
I would imagine this is makes it affordable to rent and support a family with 2 children (depending of course on your life style). Rental vary greatly depending on where you're looking to move but you should be able to find at least a 3 bedroom house for under $500 per week in a nice area.
I hope this helps & good luck with your move!
Cheers
Heidi