Good intro walks for young kids in Victoria?

My 7yo and 9yo are begging to go on a pack carry walk with us. They've done plenty of car camping and day walks so that aspect is not an issue. I'm just struggling to think of somewhere fun to start them off on an overnighter (and then maybe two nights down the track) that isn't too far from Melbourne. They are not the strongest or fastest of walkers so we will need to take lots of breaks. Probably maximum of 5-10km per day. I want it to be interesting but not too hard and definitely changing scenery or they'll just get bored. My preference is for circuit walks.
Some of the ideas I have so far:
* Beeripmo walk
* Splitting the East Walk in Lerdederg over two days and overnighting at Mine Camp. I think I would do this in reverse so walking along the river is on the second day as its more interesting
Ideally, we could start off with something easier than those. I've been evaluating every walk I do for its kid-friendly potential and keep coming up with blanks, particularly since I've had many "why the hell am I doing this to myself?
" moments on recent walks. Any suggestions?
Some of the ideas I have so far:
* Beeripmo walk
* Splitting the East Walk in Lerdederg over two days and overnighting at Mine Camp. I think I would do this in reverse so walking along the river is on the second day as its more interesting
Ideally, we could start off with something easier than those. I've been evaluating every walk I do for its kid-friendly potential and keep coming up with blanks, particularly since I've had many "why the hell am I doing this to myself?
