I think you should go to travel, but let company know that you were work too hard in the past few months, so you planed to travel and relax yourself, you know if you sacrified you travel for unknown thing, the future company may think you are desperate for the job. If you be able to give them a hint that you are good. then they have to wait for you, that is not a big deal for a company. if you push you irationally, then it means they do not care about you. My first Job, my company wait for me 2 months after interview..I told I have to get my job done before go, this is my rule. people respect other who has own respect and rule. never band over for thing you do know. unless, insider tell you, youwill get the job, just politely and firmly explain to them. they have to make choice, not you!