For numerological considerations, the business name would be the most important. See the company name articles index for information to help you with that.

Almost as important is the date the business is established, which would be its life path number. But I don't know what a CA is or does, as I'm unfamiliar with much about your country. Read the numerology life path article, which contains a synopsis of each life path number. Determine which number resonates best with CA. Then use the instructions in the article to determine a date with the preferred life path number.

The phone number is less important. The number 8 is a general business number and can be included once or several times in the phone number. The number you determine resonates best with CA could also be included.