Converter. Trans brake questions.

I have a chance to do a labor trade for my trans builder and I'm gonna take it.

Total cost should be @ 3 grand.

So I'm thinking new trans time for the 360 dart.

RMVB and trans break about a grand right?

Converter also about a grand.

Then some parts and labor should put me and him just about square.

So I know I should call a converter company but i dont wanna lie that I'm buying their product.

So help me pick a new stall.
29 inch tire.
4.88 gear
360 cubic inches.
Twin 450 Holly on a tunnel ram.
cam shaft comes on right about 2K and is done around 6

Cruzing around town usually puts me around 25 28 hundred RPM.

I DONT want to be cruzing around with my converter slipping all the time but I would like to launch with enough RPM to realy be pulling fuel and have good signal through the carbs.

I'm thinking 3,000 stall by just kinda picking a number out of my ***

What do you think?

I guess I could try and get him to just go the rebuild and valve body then pay me a grand but I get the feeling he wants this to be a straight trade.

Now on to the trans break.

This is a mostly street car, stoplight race car. It will see some track time tho.

So trans brake, over kill or why not have it and not use it rather than want one and not have it at some point?

If I'm not using the TB it makes no difference if its in the trans or not right?
It wont affect day to day driving or cause problems in the trans correct?

Anything I'm not thinking about that I should be?

Thanks for all your time a d advice.