A combination of the two could work quite well as it gives you plently of things to do during the session.
Start out with a bit of a chat about safety/boundaries...just to let him know that if there is any point where he feels totally uncomfortable you can change pace or stop a particular activity.

If you are going for the whole secret agent thing then get a few ideas in advance what the info is you are trying to get out of him. Good to choose something where he wins which ever way it goes: so if he holds out against torture then he gets tied up, blindfolded, cbt, nipple torture. If he gives in then he is required to serve and please you in which ever way you choose.

Do you mean you don't have any experience with bondage? ....blindfolds are excellent in such cases  just make sure to tie safely (avoid neck, joints, dont tie anything so tight it restricts blood flow, check extremities for change in colour or coldness frequently) and keep some saftey shears on hand incase of emergency.

CBT/nipple torture.... again use the blindfold/bondage to your advantage. There's a lot that can be done by way of the fear of what might happen (when he can see) and also the intensity of even slight sensations (when he cant see). Start out slow, light, reasonably gentle...get an idea of where his tolerance of sensation is, play between sensual and more challenging feelings.

Take time to build up the erotic tension, tease in terms of clothing and touch, remember you are in control and have fun!