Advice on booking options (hopefully not too complicated)

HI All.
Planning ahead for next month - booking flights to NYC for Christmas & New Year. Need advice based on the changes to flying club on my options available to me to maximise my miles etc.
Details as follows:
Flying out on 25th December, Returning 2nd January (land 3rd)
Depart - LHR
Land - JFK, EWR
4 x passengers
We are looking at travelling in upper class and this (quite possible) is where the run begins...
Do I purchase an economy ticket and upgrade using miles (think we need 344k in miles)
Do I buy outright the upper class ticket using miles (think we need 460k in miles)
NOTE: I only have 240k miles at present so would need to purchase more for the above (not an issue depending on costs)
Do I buy a 2 companion seats.
I think we also have a companion upgrade through my Credit Card but can't check this at the moment.
Any thoughts, comments, advice greatly appreciated
Regards
Matthew

Planning ahead for next month - booking flights to NYC for Christmas & New Year. Need advice based on the changes to flying club on my options available to me to maximise my miles etc.
Details as follows:
Flying out on 25th December, Returning 2nd January (land 3rd)
Depart - LHR
Land - JFK, EWR
4 x passengers
We are looking at travelling in upper class and this (quite possible) is where the run begins...
Do I purchase an economy ticket and upgrade using miles (think we need 344k in miles)
Do I buy outright the upper class ticket using miles (think we need 460k in miles)
NOTE: I only have 240k miles at present so would need to purchase more for the above (not an issue depending on costs)
Do I buy a 2 companion seats.
I think we also have a companion upgrade through my Credit Card but can't check this at the moment.
Any thoughts, comments, advice greatly appreciated
Regards
Matthew
