Nobody knows whats going to happen tomorrow. Be it staying or
applying for a sales position in another Rival company, both have
its pros and cons.
as you are already familiar with how your current company works,
its may be easier for you to settle down in the new office and you
can request for your new boss to put you in sales. In the same
time, maybe you can also apply for a sales job in another company
and if you are call up for an interview, go ahead. Gives you a
chance to see how's the working enviroment over there, from there i
think it will be easier for you to make the decision.
