Well that makes sense then. I'm not sure what parts you can get shipped down there due to export restrictions on some gun related items. But for medium to large dog sized game I think a barrel taht will handle heavier bullets would be the first priority, then a flat top receiver would help you get the scope on a lower plane for easier cheek weld along with getting it closer to bore line.
My Coyote rig uses a 16" stainless match barrel with 1:8 twist and I like to use 64 Gr Power points or Barnes Triple shock bullets.
I don't hunt coyotes at night so I have a Nikon 3-9x scope. (Here in the States, some states will allow night hunting and others don't)
It makes for a fairly portable package that has enough reach and accuracy to hit dog sized targets out to 300 yds. Here we tend to call them in with calls designed to sound like other coyotes or wounded small game animals. Then move from one calling position to another, so portability becomes a nice thing to have.
This is an older pic before the Nikon scope.