Try this:
Buoyancy:
Scubapro Knighthawk XL
SCUBAPRO - KNIGHTHAWK
Size table
http://www.scubastore.com/images/pdf/cuadro_tallas/eng_scubapro_size_jack1.pdf
This is a back inflate, a good solid BC
I have a BP/W and the Knighthawk, I don't use the BP/W. My wife has PB/W, Zuma and Ladyhawk she only uses the Ladyhawk.
Reg:
Scubapro MK21/S560/S360 - piston first stage, balanced user adjustable Primary, balanced non-adjustable Secondary OR
SCUBAPRO - MK21/S560 SCUBAPRO - S360 OCTOPUS
Scubapro MK17/S360/S360 - Diaphragm sealed first stage, balanced non-adjustable Primary, balanced non-adjustable Secondary OR
SCUBAPRO - MK17/S360 SCUBAPRO - S360 OCTOPUS
The MK21 is similar to the MK25 but without the swivel turret
The S560 is the same as S600 from a few years ago, in that it has the plastic balance chamber, there are lot of s600's around still with that config
The S360 is the same as the obsolete S550. Pretty much the same as the s600 but not user adjustable.
For my dive kit I have 3 Ladyhawk BCs, 3 KnightHawk, and 7 reg sets all MK25 with a mix of older and newer s600 and s360. These all work well for my family.
Not saying this is the best or only option, but as you have Scubapro 'local' and it can generally be serviced in most locations in the world.
In buying a BP/W or a Back inflate BC, you need to give some thought to the gear you will carry and how you will stow this. Jacket BCs have pockets, but often these are not practical, a bit high to access or odd shapes/small.
Being a new diver you may not be aware of the gear you might want to carry. The reason good BP/W and BCs have many D-rings is to allow clipping on items, torch, camera, SMB, spool, etc
Another consideration is use of integrated weights or weight belt. Most mid and upper range BCs will include integrated weight pockets, on the BP/W this is another cost and needs to fit on the webbing.
Just my 2cents.
