Yep, just dump it in with the rest of it. You can add less water if you want your PA to rise. As for making it sweeter and carbonated, there's not one great way that I've found. I've tried adding splenda at bottling. Definitely sweetens it up but you can easily overdo it. Some people say they dont like the taste of splenda and I have to say I've only tried it once, and I wasn't a hugh fan. I've tried adding lactose which is a non-fermentable milk sugar. It does the job but its not as sweet as table sugar so you have to add more than you would normally. I've tried sweetning several things and I've oversweetened each time. It tastes good at the first sip or two, then you realize its too sweet, so be carefull. As for the pear flavor, I dont know of any pear concentrates or juices. I'm sure they are out there. If you find one, let me know!