demande de travail et du visa, dans quel ordre?

I am a 30 year old French willing to go and live in Australia and would like to ask or some advice to emigrate.

First in short here is my situation:
I graduated from a mechanical engineering school, and was specialised in power conversion. Then I have been working for 7 years in the aerospace industry, more specially on mechanical and electromechanical aircraft systems. I have a good English working knowledge (Toeic 930) even if not completely fluent

Here are my questions:
1/ Which visa is applicable for my case? I will be 30 year old in 2 months, and therefore still could apply for a WHV pass. I am not sure if it is the good solution. May be I should preferably ask for permanent visa, but I think it is much more difficult.
Tu as raison puisque – Considère la possibilité d’aller sur un Permanent Visa right from day-1.

2/I looked on the Web that my professional skills would correspond to 60. A lot are missing, what are the chances to be successful? And roughly how long does it take to get a visa from the beginning of the procedure?
Il faut bien faire la distinction un SOL qui indique le nombre de points que chaque métier génère et la liste MODL qui te donne des points supplémentaires (15) . In terms of timeline, you should have in mind it takes anything from 8 to 20 months depending how easy/difficult your case is. Ne perd pas de vue qu’un visa permanent de categorie Subclass 136 est un point tested visa – Il te faudra 120 points or else you would have to look for other options.

3/ The best solution for me would be to find a job before going to Australia. But it seems very difficult. I had tried to write to some Australian companies in the past but was unsuccessful. Do you think it is possible to find a job before going to Australia? And before having obtained the visa?
Note that I am going for 1 month in Australia during next September. I will be on holiday, backpacker trip to discover the country. And to confirm my will to go to Australia. I could eventually profit of this travel to meet some potential employers or sponsors, but I would need to prepare it in advance and I absolutely do not know how to proceed.
Oui – effectivement ca peut aider mais d’ici Septembre tu auras peut être déjà lancé ta demande….

Any advice is welcome to help me to launch the procedures (visa and job search). What should I start with?
[color=darkblue]Dirige toi sur le site du gouvernement Australien et télécharge le booklet 6 à partir de http://www.immi.gov.au/allforms/booklets/books6.htm%5B/color%5D

Thanks