Yes. Ser in the present indicative tense is the appropriate one.

Using any other tense would describe yourself in the past, or the future, or in a hypothetical situation (like in a fairy tale)

Yes. Ser in the present indicative tense is the appropriate one.

Using any other tense would describe yourself in the past, or the future, or in a hypothetical situation (like in a fairy tale)

Estoy muy hablador would mean something like, I'm talking a lot... while

Soy muy hablador would mean, I talk a lot or more colloquially, I'm a talker