Mirror-mode won't completely save you. The trick to botting is to be smart about it and not be greedy with the hours you leave it on for. You'll get banned using either, it's just a risk we take.
Jagex won't care at all over 35M, and even if you do large amounts if you're smart about it you won't receive bans generally. You'll be completely fine, or should be.
I love the look of the jad pet, but not worth getting possibly hundreds of firecapes just to get it. At least with other pets you can profit from loot etc.