Hello sir,
what is reason for having cultivation of alovera, is any body in your nieber doing it or some body suggested you.
you should avoid growing any medicinal plants with out buyback agreement by a authorized person because most of the medicinal and aromatic crops have no organized market if there no buyers means you will end up in mess. so try to have some agreement.
there are many crops in which organized markets are there like flowers, fruits and vegetables you can think of them if you have any choice we can help you