Although my Candoia experience is quite limited( I recently aquired a Candoia Aspera) I have to comment the following.

I believe that each animal should be given at least three to four days rest and calmness from the shipping trip prior to the feeding sequence.

I also think that feeding it in such a short period from arriving together with the fact that the two food items offered where so diverse (one mouse and one lizard) might have triggered the regurgitation.

I would advise you to let it rest for a week and try a small meal again after the animal has become familiar with the surroundings. Minimal to none handling is preffered.

Keep in mind that all species from this family have a very slow metabolism and can go for a several months fast.

Regards
John Exarhou