Towing 1270 miles i need suggestions

[HEADTURNINGC10]

i plan to make a trip to texas in the end of november with my c10. To make it better ill be pulling a 1957 belair there.
the truck is currently in parts i have a 1985 front cross member to add a drop and disk brakes, the rear end orginally i wanted coil overs but for towing i understand if coil overs wont support the weight. i can get some "hd" coils springs for the trip
BRAKES- i dont want to add power assisted brakes although i will have disks in front and im looking for a conversion for rear disks as well as trailer brakes
drivetrain- mild modifed 402 bc trans unknown at the moment 3.73s with probably a 31s or maybe 33s to keep rpms down at cruising speeds
im really looking for yalls opinion if this truck will pull it there without a problem and any suggestions to make this trip easier

short bed stepside c10 twelve bolt rear