If you've got 6500 hours then i guess you will be considered for a 737 command straight away. However there are plenty of 757/767 guys with the hours for command but don't want the 737. They are happy to hang on to long-haul etc and wait out the time. Also the company like to see 4 opc/lpc's before they evaulate you for command so that could be 2 years but i've heard that's being reviewed.
As Amex said you will be long time waiting for a transfer from 737 to 757/767 as its up to seniority.
If the MFF trial is approved then who knows but if 737 captains get put on the 757/767 before more senior F/O's then is going to get ugly.
When i said 300 for command i mean they are on command courses. Then they become P/C's and wait for a spot. That said if you count the guys that havn't applied for command for whatever reason then we are at about 250 on the list. (there are also plenty on captains on the 737 that are way down the list as you will imagine.
Also day off payments are £358 for F/O around £500 for captains and flight pay it £2.67ph sector pay around £12.00 (F/O).
I'm at LGW and average 15 days a month with around 20-30 sectors. ( i count geting back at 0200l a day off although technically it's a rest day). Also i've done around 30 flexi payments this year (slightly higher than average).
BB 
Ps: If anyone gets in then i'll refer you as we now get £500 for an f/O £750 for a Capt and £1000 for refering a TRI/TRE
