1.Major brand with 12" driver, add a sub or 2 for those 200-300ppl events. These boxes can also be used as floor monitors with the JBL 8XX rig.
1a Depends on the volume you expect to handle, but you could make a single guy really busy pretty quickly with only 3 or 4 systems.
2. The night of for me with very few exceptions, most banquet halls are setting up for the next days event as soon as the current one ends so they want everything out asap.
4.It's gonna be specific to who you target, joe public will only rent the cheapest package you have but wedding DJs could completely support your business if you can get yourself in a position to be their sole provider.
5. Include a small mixer(Profx8) in the package with a USB or 3ft RCA-1/8" cable.
7. By the mile.
8. Prepaid.
9. If you have the volume it can be convenient, but all my regular customers just e-transfer balances now the day of or as I'm doing the setup so you don't have to swallow CC charges if you don't want to.
12. It helps but believe it or not won't completely stop those annoying price shopper calls/emails, there are still a lot of people that can't navigate a simple website.