Rule of thumb in starting a business:
1. Know the territory;
2. Through a Market Analyst, make your business plan;
3. Make a business study and know your preferred ROI;
4. If not familiar with the Market, enter into partnership with locals, but be wary with scammers, there's a lot of them around, especially non Qataris;
5. Then engage a local lawyer who knows the legal requirements and documentation for permits and licenses.

Qatar is one of the fast growing business areas to invest, these are mostly in trades and industries involving oil and gas, construction and supplies. But with the economic slowdown, everything went awry also.

Your investment is too small for these areas of preference. Since you want a quick buck for a small capital its better invested in publicly offered shares of oils companies because eventually oil prices will shoot up again.