If your brake is one with a clamp on one side and a fitted ball/disc on the other, get an extra long straddle cable. (A lot of us use derailleur cable.) Set it up long. Ride it. Shorten a little. Ride some more. Notice the change in power and feel. Keep doing this until you've gone to far, get a new cable, set it to that length you liked and done!
There's no right or wrong here, as long as you have the stopping power. The feel is so much a matter of personal preference that I love tha adjustable straddle brakes where I can customize the length to just what I want. (For me, usually longer than the off-the-shelf with Mafac RACERs. Other calipers vary a lot.)