I bowled the BTM and had good success with my Big One, drilled with the pin under the ring finger at 5" from Pap with the cg at 4" and the mb in the strong area about 5" from pap.
I have simillar specs to you although I'm right handed. The shot is flat and I wouldn't try playing up the gutter, I found a good line standing 38 and crossing 23 at the arrows letting the ball go out to about 15 or 16 at the break point at about 50 ft.
I would drill your ball fairly aggressive and try to get as much flare out of it as possible, 3 3/8 with the cg below the midline at 3 3/8 from the pap and the weight hole on a line from the center of the grip through the cg on the virtical axis line about 2 to 3 inches below the pap.
This should give you maximum flare and get the ball into a good roll as it hits the pins. You only have about 12 feet from the end of the oil pattern to the head pin so you will need as much flare as possible to get the ball into a good roll.
Most lefties get a nose bleed when they cross the third arrow, so if you aren't comfortable playing deep I would practice on it with a plastic ball at home before you go.
Have fun, let us know how you did, I shot 704, 146, 201, 166, 191. The 166 was on 5 and 6 which hooked about 6 boards more than the other pairs, by the time I realized it was the lane and not me it was the 5th frame and I had one frame with a mark in it. The 146 start was because I was playing straight up 10 and made a mistake, I struck early and spent the rest of the game trying to make the line work instead of moving on and finding a better line.
