I understand the imposter syndrome.
Mine was a result of my addiction. The more sober time I got and the more I practiced self care the more I realized I DO deserve good things to happen to me.
BB you DO deserve good things.
You're management believes you do too obviously or they would not have even considered you.
I think if you feel the move may be a good one then at least have a chat with them.
As long as it's not a stressful move that will threaten your sobriety I see no reason not to consider it.
Stay sober. Practice self care. You are worth it. You deserve it.