I need some help choosing servos for a WH Ultimate please.

Instructions say 120 oz on Elevators (3.5kg) - 80 oz on Ailerons (2.3kg) and 180 oz on rudder (5.1kg) - that doesnt sound a lot for a plane this size.

I am thinking about Hitec HS5925MG for everything except rudder. They are 9.2kg in an unbelievable 0. 08 seconds on 6 volts - is that madness in the overkill department??? (They cost £55 - about 100 US Dollars over here (UK))

I am thinking about a Hitec 5745 MG mounted underneath the tail end of the fus for the rudder - 12kg (425 oz) and the brute weighs 146g - that should help balance the Zenoah 62 at the other end!!??

Any help or advice most welcome.

David.