Goldsmithing is profitable, while leveling i lost around 7-8 Million so you have to weigh up the investment.
For me, i finished Goldsmithing for completion, so my motavation & mind set we're different to yours.
Mazler there is Gil to be made, looking now theres a simple Syth with a 50k profit margin though one sold per day. ('A')
Overall ive found HQ's can hurt unless moving past previous levels & creating new Tiers for previous Syths.
I'd personally not level Goldsmithing at this stage as an investment, the time vs Gil would be far better invested into Dynamis, VNM items, Salvage & alike.
Though if it's for fun, something you always wanted to achieve then i'd say go for it.
Good luck,
Menty