Cam selection help

First of all this is not for drag racing!!!!! This car will be setup for SCCA Solo racing so I need a flat low rpm torque curve. This is for a 3,000lb early A body (class I will be running in). For the time being I will be running a fresh 904 with a TF2 shift kit. Why an automatic? 90% of the courses out there you never shift out of second gear once you trip the timer. Many guys run automatics in autox and do well. I may upgrade to a 833 down the road, but I have to get this car together for the spring. I will be running a 3.55 gear in the rear and stock converter to have engine braking. The stock convertor will be the tricky part with cam selection. Talking to an experienced early A autocrosser he suggested a 3.23 gear for a 833 and I figure a 3.55 for the 904 with the 1.45 second gear ratio.

Here is what I have come up with so far, I have not figured in slip with a little slip even with a stock convertor.

Rpm 2000 Rear gear ratio 3.55 trans ratio 1.45 Tire height 25.3 MPH 28.8
RPM 6000 Rear gear ratio 3.55 trans ratio 1.45 Tire height 25.3 MPH 86.6

Remember that the timing lights is a rolling start and most are followed by a turn shortly after so 60' times won't matter LOL. The reason why I am setting this up to run one one gear basicly is because you really don't have time to shift through the course. Seriously.

Here is what I have for the car so far, Fresh assembled .030" over externally balanced LA 360, KB107's zero deck, stock rods, 2.02" J heads with a bowl blend and runner clean up and gasket match by my engine builder (not sure what they flow). With the head gaskets that he provided it comes in at 10:1 cr. Stainless PRW 1.6 roller rockers and most likely and LD340 or Eddy RPM and a 750 holley. Windage tray and double roller. I also plan on running TTI's.

I have a comp XE284H that I was going to use for another project, but it's a street/strip which requires more stall and convertor, so it won't work. I would like to use a hydraulic flat tappet, but would consider a solid flat tappet or even a roller as long as I don't have to do any machining to the block.

What cam would you recommend and why? Remember stock convertor and one that will pull from 2000-6000.