
I have good news all around, then! ... Kinda.
First the actually good news - when the base classes get to level 30, if you level the proper "subclass" to 15 you can unlock special Job classes. Arcanist is unique in that it has two: the continuation of the DPS angle in Summoner, and a healer version called Scholar. Summoner requires Thaumaturge 15 and Scholar requires Conjurer 15. And if you have them both unlocked, their level is based off Arcanist, so when you level one, you also level the other. Which means you'll have a high damage class with a tank pet for when you want to do stuff solo, and can switch to the healer for faster queues for the story dungeons!
As for Heavensward, keep in mind that it contains more than just letting you pick a new race at creation. It raises the level cap (50->60) and has a lot of new content regarding that for all classes, and also includes three new Jobs (Dark Knight, Astrologian, and Mechanist) to play around with once you actually hit Heavensward content. However, there is no particular rush to do so unless those sorts of things interest you. And, as mentioned, if you get the collector's editions (of the base game, Heavensward, or both), you can get a free Fantasia. So... you can always change one of your characters into an Au Ra later if you decide you want to get the expansion.
Like, perhaps, one of those two other recommended characters to be made for the transfer. Then you can have a Miqo, a Hyur, AND an Au Ra if/when you pick up HW! I actually had a character I created specifically to be an Au Ra prior to HW dropping... leveled him up, and then Fantasia'd him into an Au Ra once the expansion came out. Just had him "properly named" ahead of time to avoid a name change fee.
First the actually good news - when the base classes get to level 30, if you level the proper "subclass" to 15 you can unlock special Job classes. Arcanist is unique in that it has two: the continuation of the DPS angle in Summoner, and a healer version called Scholar. Summoner requires Thaumaturge 15 and Scholar requires Conjurer 15. And if you have them both unlocked, their level is based off Arcanist, so when you level one, you also level the other. Which means you'll have a high damage class with a tank pet for when you want to do stuff solo, and can switch to the healer for faster queues for the story dungeons!
As for Heavensward, keep in mind that it contains more than just letting you pick a new race at creation. It raises the level cap (50->60) and has a lot of new content regarding that for all classes, and also includes three new Jobs (Dark Knight, Astrologian, and Mechanist) to play around with once you actually hit Heavensward content. However, there is no particular rush to do so unless those sorts of things interest you. And, as mentioned, if you get the collector's editions (of the base game, Heavensward, or both), you can get a free Fantasia. So... you can always change one of your characters into an Au Ra later if you decide you want to get the expansion.
Like, perhaps, one of those two other recommended characters to be made for the transfer. Then you can have a Miqo, a Hyur, AND an Au Ra if/when you pick up HW! I actually had a character I created specifically to be an Au Ra prior to HW dropping... leveled him up, and then Fantasia'd him into an Au Ra once the expansion came out. Just had him "properly named" ahead of time to avoid a name change fee.