Looks like the salary scale is the same as SSP, only 12k of it is now tax free. Looking at about £3,000 per month after tax in year 1. The BA scale has 24 levels for FO and CPT, if it is held at 24 levels (years of progression) it looks like the pay racks up quickly.
With courses starting in December you would need the final round selection in November, so this scheme will have to kick off soon to get applicants through the first few phases by then!