Should it be "since I became a Priest" instead?

[Kohyoongliat]

I would like to congratulate you all on holding of my first Discussion Meeting since becoming a Priest.

Should it be “since I became a Priest” instead?

Thanks.

[Arinker]

@Kohyoongliat

I would like to congratulate you all on holding of my first Discussion Meeting since becoming a Priest.

This is a bit ambiguous as to whether you’re referring to yourself or the other person.
You proposed change “since I became a Priest.” Clears it up nicely.