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Saw your post. I did my Ghrihapravesh without a priest. I was new to Melb. No friends.Nothing.
Other than the divinity, no one helped or guided us. I was in a hotel for a month. Mom had an Almanac. She suggested a good date.
I did Ganeshji's pooja along with the boiling over of the milk & that's it.
Shravantika, faith is more important. Yes, you may have certain wishes like: get a priest etc. But when you do not have one/not interested in getting one, DIY (Do it yourself) is the best Mantra.
For more easy advice, I would suggest you to email Chitraji (Chitvish). She is the best one to advice you.
She has helped many NRIs like me with queries.