Hi, i'm Danny, hope you are well.
Unfortunately, replacing the key and barrel without a valid transponder chip, the vehicle will not start.
You would either need a dealer or a mobile auto locksmith to program you a new transponder or the one in with the new kit If it happens to come with one.
Generally at a dealer this involved proof of ownership etc and you would need your paperwork, most mobile auto locksmiths can usually obtain the code for you also.
Have you considered as you would need a auto locksmith, getting the key pattern number and getting a key made up to the existing locks at the same time as having a transponder chip programmed? I wonder if this may prove less hassle in the end rather than replacing the whole lock set over time.
In the uk, I recommend the following site for key pattern codes, this would let you get a key made up to the existing lock.
They also have immobiliser access codes if required for the programming of the new transponder chip.
I've personally used them myself and know one of the guys there from school 'back in the day', never had a problem with the service.
I hope this helps you, if so, please rate 5 stars, feel free to ask if you would like a bit further information ;)