Stock stator with a DS kit?

My bike came with a Eline battery kit that was all botched up and a rear brake light/molded indicator/plate holder on the back. Handlebar switch didnt work so I picked up a cheapy with a high/low beam switch, indicator switch and a horn button. I fiddled with it until I got the rear brake light functional, headlight works on AC, indicators are(must be?) on ac so I can't hook up a flasher (I just click the switch back and forth depending which way on im turning to make the indicators flash), and i wired the horn button to be my kill switch. The Eline battery pack is still incorportated but needs to go.

The question: Can I just add a Baja Designs regulator rectifier and a battery to the stock stator.

I just want my headlight not to dim, and have DC so I can add a flasher to the indicators. I dont need a horn(or want one). If i ever decide to get it inspected I will do a 9v horn or something, not worried about a horn.

Also. I had a portable vacuum die on me. I disassembled it, took the batterys out and put them inline, there iss (10) 1.2v batterys 1300mah that are charged up and read a 12v output on the meter (the BD pack is (10) 1.2v 700mah). Can I use this pack or no good?

Yes you can but Its worth upgrading to a high output stator ( you can rewound yours cheaply ) , as it makes huge difference especialy on a american xrr .