Yes you can do Business, however no partnership will be fruitful. As you have Sun and 6th lord Venus in the 7th house, partnership should be completely avoided. Your Ketu and Mercury period ends on 30 December 2015, thereafter you can start. Do the work in which your financial involvement is less, no loans and is fast moving in terms of sales.
Blessings,
Navneet Khanna
Astrologer