Australia / Visa question - Polish girl wants to join her boyfriend in Australia [5]

Hello everyone,

As stated in the topic, I'm looking for a way to join my Aussie boyfriend in Australia.
I've been looking for the visa options and I'm not quite sure what would be the best choice in my situation.

I'm 24 yr old and I live in Poland. I hold BA in English and MA in Psychology and I was considering Skilled Migration. However, I'm not sure if that's the right choice for me, especially that my MA isn't necessarily an equivalent of the Aus one and I don't know if I would qualify. I don't currently have any job offer form Aus but maybe that's something I should look into? Is the sponsored skilled migratuon a good option?

I also read/heard that some of the visas have been given priority status while others have been, apparently, put on hold. That's why I'm not sure what I should do now.

My boyfriend and I met online almost 2 years ago and he came over to Poland to spend the whole Aug with me. I really want to join him in Aus and, as far as I'm concerned, the Prospective Marriage Visa is the only option in our case. Truth be told, we don't really want to get married yet but I know that there is the 9 months period given during which we aree obliged to get married. Do we need to give the time and date of the ceremony in the visa application, or can we omit this one or at least sumit it later?

I'm also aware that we need to submit some proofs of our relationship but I'm not sure what should it be?
I'm thinking: phone bills (altho we don't call each other just send sms-es), emails? (or just the print out of the Inbox which proves we exchange emails daily?), we talk on skype so maybe the history of the calls?

Any other suggestions?

Thank you in advance for any help you may offer.