Your birth name's numerology energy will be with you, to greater or lesser degree, no matter what acting name you decide on.

The number 9 resonates well with acting. The number 3 even more so. And the number 5.

Determine Actor's Name Using Numerology has much information related to your question. Do give it a read.

Your birth name's major numbers are all the number 9. And your current life period is the number 6.

For privacy, I removed all but the first letter of the acting names you asked about. They're referred to here as G… and J….

Of the two you suggested, the acting name J… resonates more with your numerology chart than the acting name G… does. Both acting names have the number 9 in a prominent position, and neither has 3 or 5 prominent.

There is an acting name calculator available to test various acting names and see what their resonance is with the acting profession (the calculator responds with a point value for each name).

As an option, consider having both a personal name (your birth name) and a professional name (your acting name).