Whoops,
In view of your special circumstances and age, BA L/H is a positive step. But, you have to be aware- there has been a lot of recruitment into BA, and the average age of co-pilots is down. Time to command could be long as they will be in those slots for a long time. Commuting works well- many in France, quite a few in Spain, the Oz guy is junior, some in South Africa, one or two in the States. Must be L/H though.