Class 5 Bi-Weaves on a T9 won't last very long, that's almost like flying without Shields. The T9's large footprint and hitbox will amplify that problem further....
For me, the shields on a T9 are only there to let you know something is starting to go wrong and give you chance to react.
Mine's got a 6A shield (with a couple of HD boosters) and that's
just enough to give you a bit of a head-start on the bad-guys.
It's really the hull which provides
most of your defence and allows you to make a successful getaway.
The trick is just not to get any big ideas about staying and fighting if you have more important things to do.
The highlight of my T9 career was destroying a CMDR in an iClipper who probably wasn't expecting me to just spam heat-seeking missiles as soon as he interdicted me but I only attempted that because I was on my way back from an engineer and I wasn't
that bothered about the re-buy.
If I'd have had a cargo hold full of ore, or a heap of missions to complete, I'd have high-waked without a second thought.