But , like i said, if i'd never seen or heard the name i would say Nic-cola because of standard english pronounciation of words with a vowel at the end withonly one consonant before it. (if that make sense)
Re words ending with one consonant and a vowel, the country, Canada, is pronounced CANada, not CaNAda and - as for three-syllable girls' names such as your own - Erica is pronounced ERica, not ErIca, and Angela is pronounced ANgela, not AnGELa.
Similarly, the "standard" pronunciation of Nicola is NICola, not NiCOla. However, as others have said above, you are perfectly free to pronounce it however you want to. Why not go for something completely different...NicoLA?
Interesting comments, my sister's name is Greta and the pronunciation by others is about 50:50 Greeta vs Gretah. It was intended to be the former, which is how the family pronounce it. (I was always taught at school that a vowel at the end of a word after a single consonant makes the middle vowel say it's own name, which is why I find it unbvelievably irritating when people say sconns instead of scones!) Anyway back to Greta, she's completely unfazed by it all and answers to both.