Having lived for most of the last 24 years in Australia, I am curious as to what it is you term "Australian pea" - never heard of it. Googled it, and various Australian plants came up.
I have been considering the apples in the fields for fodder, and I am hoping the part shade may also stop the grass browning off so much in summer. Having had birds strip an apple tree in a few days, however, I am a lot more partial to pears now. the birds are not touching them till the fall on the ground and ripen. I have also recently found that one of my goats loves plums - carefully chews all the flesh of the seed, then spits the seed out. These are the yellow wild plums - they will also strip the tree bare of leaves if they can get at it.
Other options that I am considering are:
-Tagasaste (Tree Lurcerne)
- Growing grape vines, kiwifruit, and berry vines along my fences, and planting hedges of blueberries, gooseberries, currents etc. - leaves for the goats and
fruit for the chooks. All of these can be grown easily from cuttings.
- Carob trees - the may eat the pods.
- Feijoas (pineapple guava) - my goats would not eat the fruit, but you could maybe train them into it. (Mine won't eat pumpkin or carrots etc either - they were raised in high country open pastures)