I’ll try to answer a pair of your questions.

2. What form of CIWS will be fitted to them? The Spanish ships are fitted for but not with the Merkoa CIWS. Also the G&C design had two CIWS’s one fore and one aft, will the Aussie F-100’s have the same as the Spanish or will they have the two they originally wanted?

No Meroka, I assure you.

The Meroka 2B variant proposed by E.N.Bazan (now Navantia) to be fitted in the F-100 class, was discarded by the Spanish Navy and its development halted years ago.

3.There are 2x 20mm canons either side of the bridge. Will these be replaced with two Remote controled Typhoon canons of the 25mm caliber?
4. Aft on the top of the hanger are a couple of spots for 50 cals, will these be replaced with the remote controled Mini Typhoons that are now fitted to the Sydney and Anzac class vessels in the RAN?

The light armament like many other things is a decision of the customer. If the RAN have the money and the ship is capable to support them, they can order the installation of any to the Australian shipyard selected to build the AWDs.

With the Aussie LHDs, we have a similar occurrence. The light armament will be selected by the RAN and probably installed by Tenix in Australia during the final works. Or if the RAN wants, by Navantia in Spain, before they sail to Tenix for completion.