A no brainer!
working for an airline on a TP you will be bottom of the food chain, working 6 days on 2 off finninshing on a late and starting on an early all for little more than £20k a year you will be bottom of the senority list and probably be moved more than once against your will for very little or no relocation money. The golden days of avaition are well and truely over. Thesedays you either work shorthaul and work to the max and are home at night or you fly long-haul and hardly touch the aeroplane and spend about 12 days a month away. Either way you can expect very little rewards for at least the first 2 to 5 years while you gain experience. You will need at least 3000 to 5000 hours to be considered for a good job and every year the conditions get worse and worse...
Very sorry to burst the bubble but unfortunatley true...