That’s a very reasonable price for a large system with good all-round panels and inverter. Sungrow inverters are rated in the top 5 overall for features and performance in our reviews.
The Jinko Tiger NEO panel series are the most popular residential panels in Australia at the moment.
Arise solar doesn’t have the best reputation, from what I’ve heard.
If you were considering getting a battery I definitely go with the Sungrow option. The Suntank is just a rebranded Growatt battery and I’m not a fan of Growatt