I think the ship Innocentius posted is a good start. Good jump, fast, good shields and integrity and even packs a rover. Still using a prismatic if that's your thing, but a class 2 that saves a couple tonnes. Swap his weapons for your favourites, or mimic them.
My Courier is faster, but then I don't have a 6t hangar on board! He has packed all that in to just 73t, and that's important because it falls under the optimal mass of the EPTs. Speed is life. Ships this fast can boost out of a submit faster than the interdicting ship can deploy his weapons, let alone fire a shot. A little faster and he'd be outrunning his own missiles
And ships this fast are hard to hit, so 900mj is more than enough, and he even has some meat on the bones, in the event the shields ever collapse and as collision protection. Well-flown, fast Couriers have just one threat really, collision. Integrity is the failsafe that protects you when the odds catch up and you inevitably pinball off another ship or two. In my ships I put high priority on shield thermal resist. Thermal resist gives your shields 'elasticity' against the very weapons designed to collapse them. Essential, for a combat ship, in my view of things.
The speedier, the better.
Amen to that.
This my Courier, just to share. No rover, but room for it. It's a bit of a 'tweener. We had a thread some time back called Fast Battle Courier, where I searched for my best build. Over time it became a bit compromised as I realized what its deficiencies were, and this is the result. Not suggesting to copy this, just another Courier. I wanted a ship to use for bounty hunting where I could just fly it wide open all the time. And that's what I do, carving big arcs around a furball, slashing through to get my tags and extending at full speed to arc around and do it again. I envisioned building a ship I could fly like a Focke Wulf attacking a bomber stream, making gunnery passes at speed before extending away.
A ship builder, outfitting and comparison tool for Elite Dangerous
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You can see here what good shield resists do. I have only 586mj, but it's an apparent 1395 against thermal weapons. Shields done like this punch above their weight with the added bonus of faster recovery