US MBA - Is It Worth it For Me?

Hi Everyone,
I'm a 28 yo European living in London. I went to two semi-targets (UCL/StA/Warwick/Durham) and got a first and a distinction in my degrees (one in economics, one sadly in public policy). I have been working in audit for 4 years (3 at the Big 4, 1 at this smaller firm specializing in HF/PE/VC) here and given the current state of the market I feel completely stuck, and I'm afraid that if I stay in audit for another year (and make manager) I'll be pigeonholed as an accountant forever.
I'm considering the radical move of doing a US MBA to break out of this impasse and get into MBB/T2 consulting, which is what I'd always dreamed of doing since midway through university. Although my family is somewhat well-off, they cannot pay for this (especially after already paying for my previous 2 degrees), and I would need to venture into the unknown and probably take on a mountain of debt that is completely out of the ordinary for a European/ honorary Australian like me.
My question is: do you think my profile is good enough to get into a T15, perhaps with some kind of scholarship (I'd still go without it, but it would obviously help a lot)? I'm a white male, unfortunately, so no special considerations there. I would only apply if I got a 750 in the GMAT, which I believe is achievable for me. More importantly, could I get a full ride at a T25 like UT Austin? That would be ideal for my goals tbh and would significantly relieve the stress of it all. I just feel like I've backed myself into a corner with my career that I feel like this might be the only way out.
If you read my previous posts, you would gain access to my deepest and darkest fears. The tldr of it is that i don't think my upbringing is realistically replicable (wealthy sydney and on the lake geneva). Using the hunger games as an analogy, I grew up in the centre of the Capitol, and I've now been kicked out into district 5. I don't even necessarily want to go back to the Capitol - I'd be fine with District 2 (a chill radiologist in Chicago or smth) - but I don't see any way to get a semblance of a decent life other than taking this massive, insanely stressful step (unless I stay in audit forever but fuck that).
I don't really have any thoughts on living in the US, as long as it's not new york (yuck), but I'm fine with it if it needs to be done. I look into the future here in London and see mediocrity (Balham? Kent?) and I'm excited for the Rollercoaster the US could bring.. My longer term plan is to move back to Australia when I'm 40 to raise a family, ideally in a great position, but anything except that is negotiable.
Does anyone have any thoughts overall? Thanks.