It is impossible to transfer schools within Australia.
if you want UQ Ochsner, you would have to apply now and forget Monash.
Even UQ traditional students have been rejected on applying for a transfer to that program within their own medical school.
what do you mean by "land int"?
to clarify your cons with Monash:
cons - it is not only not guaranteed, but currently, with the VISA situation (unless that changes), you won't be able to get a VISA to finish your training even if you start it in Australia. Unless you are okay with being a rural family doctor, or want to be one (it is a great career, but I realize it's not for everyone and the majority of premeds do not consider this their top choice on graduation). with current visa policy, you could work 2-5 years tops in Australia after graduation, should you be able to get a job (this is insufficient to finish training in Australia, generally speaking - don't confuse it with residency in the US). Potentially if you found a rural position, there may be the possibility of staying longer to finish 'residency' in Australia. regardless, majority of international students will end up in rural positions anyway - so you have to be comfortable with this possibility.
with regards to USMLEs preparation:
if you drop buckets of money into programs like Kaplan etc. that should prep you for USMLEs. How do you think UQO prepares their students for the USMLEs the first two year when they're in Australia? mostly it's because included in their tuition is the purchase of UWORLD, or Kaplan or whatever board prep that you can actually buy on your own. they do offer tutorials weekly, but the tutors are upperclassman (i.e. Canadians doing 3rd year rotations in Australia, who happened to take the USMLEs and score very well). You could probably purchase your own tutorial or videos with USMLE Rx or Kaplan and it wouldn't be too far off. The UQ curriculum in first and 2nd year itself does not prepare you for the USMLEs, and it's taught by Australians to all students at UQ. UQOchsner differentiates itself from the rest of UQ by 3rd and 4th year - when you do all your rotations in New Orleans. This is the key advantage - guaranteed rotations, at one base hospital in the US with staff catered to your needs onsite. Also, that base hospital, likes to hire graduates from this program.
It's not really an ideal situation right now, given the current job climate, to study in Australia for the sake of the 'experience of studying'. Also..don't confuse a professional school like medical school with say undergraduate studies, try to take this more seriously beyond the idea of adventure and fun. it matters where you go for medical school, increasingly now. For instance, if you want to stay in the USA - stick to the USA, get your training by American doctors from start to finish. This stuff actually matters. I'm confused over why you wouldn't want to go DO.. There is a stigma towards all offshore students in general with regards to matching back to North America, you're much more valued as a candidate if you're locally trained. Always. for any given Western country. It's immensely valuable if you understand the cultural norms and healthcare systems, or particular patient populations - they don't have to teach it to you or wait for you to adjust.
have you applied to US MD or DO programs?
If you want to travel for work later, you can do after residency.
you can do that during fellowship, there's many North Americans that travel to Australia for that. But given the challenges with getting residency - honestly, if you can get DO at home, do that, match into a residency you want. travel for fellowship later. what you don't want to do is get trapped into a situation where you're unhappy with the career you're left with. as the options can be limiting for offshore students, not always, but there is that possibility, and it's higher for offshore than onshore.
whatever you do, don't consider this a decision that affects just 4 years. it's the rest of your life.
edited for clarity