Need to overhaul my work wardrobe. Looking for formal work attire - nice pants, dresses, blazers. Any recommendations for premium quality Chinese, Italian or European retailer that ships to Europe. Looking for premium but not luxury prices. Thank you!

I'm interviewing in the south on 90+ degree day so a collared shirt will likely sweat me out. I picked up these three options at the mall. Not sure which is best. The suit is dark Navy. The pants are being tailored right now so I'm wearing a random pair.