I need 2 or maximum of 3 switches in my bread board experiment. In future I may be required more than 3. So should I buy 8 in 1 DIP switches, or separate sets of 3, 4, 5 DIP switches etc keeping economy factor in consideration. Also can I use jumper wire or some other thing instead of switch. Electronics and IC Market is more than 100 miles away. I have to perform logic gates and latches on breadboard. I have all other apparatus.

 

This is what you need for testing and development. Save the switches for the production run.

 

separate sets of 3, 4, 5 DIP switches etc

This is a better way, because it's more easier to identify the different function of switch, when you do some bigger experiment.

Also you need to buy some Mini Push Button Switch as this and the centre one of this.