1, minimal danger to stock from overshots so no .17HMR

2, (and most importantly) Noise
For the Magpies and Possums my .22 air rifle is more than adequate for dealing with these pests however the limited kill range at 35-40 meters for a 800fps .22 air rifle makes it harder to take out the Hares in particular, the little buggers usually scarpo long before I can get anywhere near close enough.
Because of noise issues i'm leaning towards a suppressed .22 with subs that will extend my effective range out to about 70-80 meters hopefully making it a little easier to bag a few Hare for the pot as they are surprisingly good eating .
since Ive recently spent waaaay too much money on a competition air rifle for my boy budget is a little tight so I was looking at maybe a new Jw15 package deal with scope and suppressor. (I have around $350 to spend)
Ive learnt that the Jw15 is a Chinese "ripoff" of the Czech .22 LR Brno ZKM-451 and that is supposed to be accurate. doing the usual googling and bla bla bla tells me a little, but I was wondering if any of you guys who opinion i value more than google have a jw15 that you shoot and what are your thoughts on the gun, accurate out to ???, any known issues with feeding from the mag? missfires? etc etc, oh and how loud is it if suppressed and using subs, some noise is ok but the farm owner doesn't want the sound of constant gunfire echoing around the valley like a war zone.
cheers guys