I need some inspiration

My situation,

IM 42 and I have to support my wife and young son.
My wife is a foreigner applying for a pr and cant work in and kind of meaning full employment.
I quit my office job years ago to scratch out a basic living advertising things on the
internet from home. I really hate bosses.

Ive wanted to get involved in property ventures over the years but I cant borrow money because of my employment status and what most people at property seminars dont understand is that in order to play capitalism you need CAPITAL. Its been very frustrating for me over the years to sit back and watch on the side lines while everybody else in Australia became high net worth individuals because they can borrow and I cant.
I found from past experience that I dont relate well to other people so I cant really get backed by anybody else no matter how good my ideas are. That inclues friends and family.

I have only one asset my apartment on the gold coast where I live with my family.
Its worth about $350,000 and still has a $180,000 mortgage left over for along time ago when I could borrow money. I feel I need to do something so I dont end up retiring in poverty.

If I sold my apartment that would release some capital and open up options for me.
I cant borrow. Yes I really cant !!!. I have no documented income. I spoke to the bank and they said they will let me do whats called a security substitution which involves moving all or part of the mortgage to another property without making me re apply for the loan. so that gives me a little bit of flexibility.

So assuming I sell that gives me $170,000 cash and a $180,000 loan that I can keep all or part of.
Once I sell I will have to rent somewhere and cover my families costs so thats a consideration.
Im time rich my and im prepared to go anywhere and do what ever it takes to get a result.
Years ago when I could borrow I did a couple of renos so I have some handy man skills.

Here are some ideas…

1) – Owner builder – safest
Become an owner builder start in some regional area where land is cheap build a house cheaper than the market live in it for X months. Sell it. Take the proceeds move to a slightly better area and repeat.

2) – Chop up and old block of flats. – riskier
Buy and old 4 pack of flats in some small town for $300,000 ish. Move out there for a while.
Nice them up a bit and strata title them and sell. Then repeat.

3) – A mini property development – very risky
Buy a big block in a regional area for $300,000 ish. Draw up plans for 4 town houses and have
a local agent sell them off the plan. If I can get the pre sales go to the bank and borrow the money and have a building company make them for me.

4) – Get involved with us tax liens – Totally crazy.
I did Steves USA tax lien course a few years ago so I understand the concepts enough to get
started. I could sell let my mortgage go and take my cash to the usa and just focus on tax liens.
Im very familiar with the usa Ive got Bank accounts and an ITIN and know a few people in the real estate business. If the tax lien interest returns are 15% ish thats not really enough to count for much with my tiny starting bank so id have to focus on properties that turn into forecloses. Not sure how feasible that is. ???

Also, the more insecure the option the more likely my wife is to go crazy and create emotional drama.

So tell me what you think ?