Unfortunately, you cannot apply for Family visa for 2 reasons:

1. Your visa is not eligible to apply for one. You need to be at least an Engineer to get an approval. You can apply before even with a Technician Visa, but my colleague got rejected recently and had to be changed to Engineer.

2. Basic Salary should be 10,000, that is not inclusive of allowances. if you are receiving 7000 only, chances are you'll get rejected.

However, it will all depend on the person reviewing your application. No harm in applying, as you will not pay anything until the visa gets approved.

Goodluck!