If you make what is similar to a front box spring mount to increase the weld area to the body you should be fine or the extra bracing rather than just relying on just the A frame to body points. You do miss out of re-enforcing the front spring mount with the end of the A frame though is the only thing but that could be achieved with bracing too. Just works well having both doing the job for each other.
Doing the work you say though should not cause concern but don't be surprised to be touring with it in a few years time too over much longer Outback roads. Gets in your blood after starting out on small trips.