Of course you need to think about where and when you use Flaps 3. If there are strong thermals near the runway, forget about it, you'll have a hard time to reach Vapp. Same if there is a strong tailwind. And anyhow, if you briefed for Flaps 3 and for whatever reason it does not realy work out for you, reconfigure for Flaps Full before 1000' and presto, on you go.
But backofthedrag, if you need just a little bit of speedbrake to set you up for a Flap 3 landing, then what is wrong with that? No shame there. At least you're not 'abusing' the superduperspeadbrakes called Faps Full that mask all but the greatest energy management mistakes.