Kia Ora from Upper Hutt!

Hi folks this looks like an excellent place for advice and ideas. My husband and I have started our lifestyle adventures on an acre block north of Upper Hutt filled with stones blackberry eucalyptus and gorse. It also happens to get nailed by the northwesters. Bloody dry soil too.
So in order of priority 1) best ways to deal with blackberry and gorse? 2) alder and tree lupin for shelter belts? 3) best brand of chipper mulcher as we are attempting to set up permaculture and need large quantities of mulch? I've read existing threads on this but no one has mentioned whether the cheaper Chinese imported chipper munchers are any good?
No doubt I will have plenty more questions in due course! Nga mihi

Kia ora!
We have a Bio 80 carravaggi (possibly 9hp) mulcher which is pretty good, but the only comparison we have is a little suburban garden sized useless thing we hired once.
What we like about it is we haven't had to sharpen it for a very long time, the drive belt lasted well until rats chewed it, and it deals with everything smaller than firewood, and both chips and shreds, so thicker branches go in one chute, while brushy bits go in the other.
We modified it, increasing the wheel size, to move it easier on our rough steep ground.
One comment I will make, is you aren't going to have much room for growing your mulch if you need a lot and only have 1 acre, as you don't get much from a large amount of vegetation. I call ours the devolumiser! For example: We cleared an area of tall gorse and broom, maybe 100m2, and got about 1.5 m3 of densely piled woody mulch, (and a very small pile of firewood) after a lot of work.
Plan on getting most of yours from elsewhere as that amount doesn't go far, and takes time to create.

Suggest you go & make friends with Treescape, or a similar company - they create tonloads of mulch and may well be happy to let you have some!

Otherwise, well, hmmm...can you offer to help clear any neighbouring properties in return for mulching the cut stuff? You could hire a mulcher for a weekend and make a big lot in one 'go'.