​I wish to start a perfume shop in Dubai Mall

So I am planning to start a perfume business in Dubai Mall. I dont want to manufacture the product.

There are producers in UAE and I will use my own packaging and sell under my brand name.

Now is it a good idea to start a physical shop first or try with an online store to test the market?

Perfume has a relatively higher profit margin and many foreign customers also visit the mall.

Since I am not starting a manufacturing site so I projected that with $300K of investment I could research profitability in 2-3 years if I charge $60 a bottle which could cost me $25 with packaging.

I plan to keep overheads very low.

I would love to hear from people in perfume business if my projections need adjustments