As you have a decent, automatic processor, I see absolutely no reason to use a blix kit! Buy some "official" chemistry. I'm sure you can find it somewhere near you.
But of course, as you already have your kit, you could do some trick, like putting slightly acidic stop bath as "bleach" and blix as "fix". This could work if the program goes 3'15 + 6'30 + wash + 6'30 + wash. Stop bath of 6'30 is very excessive though and may have some negative effects... This is why I would recommend more dilute stop bath, but then again, development might continue in stop bath. I would still try it, these processes are surprisingly robust.
You cannot enter arbitrary programs into ATL 1000? Is it so restricted?