Hmm, unsure it's up to you.
The gold coins are very tiny and might be difficult to look at and enjoy.
If buying the gold coins buy them individually in separate boxes and certificates for better resale. Gold is usually determined by gold price. But you rarely seem to loose money on gold coins. So it probably wont make a huge profit in the short term, you would have to hold on to them for a while.
The
Kookaburra will be a decent size to look at and enjoy. But its silver bullion and it tends to really drop in price in the long run. A $110 coin will become a $65 coin in a few years. This type of coin you buy to resell fast to make $10 - $20 on.
I would wait it out until they release something like a coloured version/ privy or ANDA version that would be so much more collectable and hold its price.