If you are visa officer what do you think are my chances of getting another TRV?

Hi there. I am 33 year old single mother and I am planning to renew my TRV this coming October (God willing). However I am really having second thoughts before making an application. Visa fee is a not cheap thus I just want to make sure by asking the opinion of others i can determine whether I have a strong chance or not of being issued another visa. So this is my situation;

Travel History: 3 Schengen Visas (Germany etc)
2 Canadian Multiple Visas (Last vacation I had I stayed for 5 weeks only)
1 US Multiple visa (not renewed)
Travels to Singapore and other Asian countries

Social and economic ties: I am currently a graduate student on my second year taking my masters at a Popular University here in Manila
I have all my family here in the Philippines especially my 3 year old Filipino German daughter

Proof of Funds: 3 years of Time deposit worth 10,000 Canadian (Equivalent if the currency is exchange)
a Bank statements of 3 years (since 2008) with revolving funds 600 Canadian of monthly deposit

Job: This is my problem because for the last one year i have been working with my sister's maternity clinic as a nurse. And I think visa officer does not favor nurses going on vacation in Canada.

But then I am not really sure. If you are a the consular officer does my renewal stands a chance or maybe not? By the way my TRV is still valid until August 16, 2011.

Any opinion I will deeply appreciate. Thank you very much