A quick look suggests the reel will be plenty big enough. It seemed to have a good diameter in the picture, but I couldn't find any specs to tell me what its specs actually are. Suffice to say it looks wide enough to give you a good retrieval rate. I'm sure you'll get plenty of backing on there.

The combo package seems like a very good deal. I can't tell you what the rod will be like without casting one, but fly rods that are completely "good enough" can be remarkably cheap these days.

It will be OK ish. I haven’t fished this rod but have handled them in the store. Too heavy for snapper and kahawai but you will get smoked with that reel with Kingfish
What are your target species?

Will be fishing land based, typically an auckland east coast bays type scenario would be as rugged as it gets, so thought a 9wt would be a little more suited to the rocks. The same setup is available in 8wt as well.

2o to 15 years ago I used an Abu 8/9 weight rod  reel. It easily handled kahawai and most of themwere 2 to 2.6kg in a very strong current area and never got antwhere near spooled. Things have only improved since then I'm sure.I once used a 2 handed 12wt monstrosity and caught a legal king and a very big trev and at the time I thought it wasn't too much fun. If you can afford that set up I could only guess it would be streets ahead of what i used to use and I really enjoyed casting flies to kahawai with the old Abu