Hey Halceon
To start with, have a quick look at this raw T-6 build. If you just swap the 4A and 5A shield gen out, you'll see what I was talking about in regards to the 5A gen being a waste, as it uses more power and only gives you 7 or 8 mj over the 4A.
https://s.orbis.zone/1wwu
Here are a couple 1 booster builds you can do for the T-6. With combos of mods on the shield gen, booster, and your core internals. Since the T-6 doesn't have tons of available power, I opted for specials that reduce power draw.
(These are assuming you have access to Farseer, Dweller, and Cheung)
https://s.orbis.zone/1wwv
https://s.orbis.zone/1www
You can play with more combos to see what gives you the best "effective shields". This is found on the defense tab at the bottom of the coriolis build screen - set 4 pips to sys and use the effective shields chart to get see how your shields will stack up against different damage types.
You can add an extra booster if you want to, like a Heavy duty E booster...
https://s.orbis.zone/1wx2
Or keep that extra utility slot for point defense, or some other module.
Play with it and you might find some combo that's even better. But best to remember that no matter how you mod a T-6, there is a lot of stuff out there that can kill you. Your best bet is to make sure you are practicing good escape procedures, and ideally make sure you're paying attention in supercruise so you don't have to escape an interdiction in the first place.