A nice sized Bristol Beaufighter

Choose the bigger speed controller - gives you more 'headroom'.
 

It's going to need a 4S battery, good choice, much cheaper than 6S

4S will give you 8,500rpm. If you have the right propellers to draw 135amps at WoT that's a total power drain of 2.16kW. a 4S 4,000mAh battery will give you about 30 minutes. Eric needs to check me here my minds just gone blank!

It seems you are struggling with this model, Tony!
I can't help with the undercarriage details, but I think it worked a bit like a Lancaster one, where the two-sided legs fold in the middle, and the wheels go up into the engine nacelles.
Washout is where the wing is twisted along the span, so the tip has the trailing edge higher than the leading edge - usually by about 5 degrees or so. So that if the plane is flying too slowly, the middle of the wing stalls first, not the tip, which means that the nose comes down, and not one wingtip.
Spruce instead of hard balsa - spruce is about the same weight, but is more springy than balsa, and less likely to split along the grain. So it is better for wing-spars and main fuselage longerons.

Re Tony Klippy's comment on batteries a 4000mah battery is a 4 amp battery (the same way a metre doesn't have a million millimeters in it - only a thousand!). I very much doubt you'd get a 30 minute run from it, more like maybe ten minutes if you are just cruising the model round, and maybe five or six at high power.

You're right Simon, my mind went blank on that one.
Tony, 3300W will give you 150watts/lb I would say 100W/lb would be adequate. To be safe 75watts/lb per side times 22lbs is 1,650 watts per side. So prop for 100amps, so a 4S 5,000mAh battery will give you 5minutes at full wellie. Easily 10 minutes of scale flying and some in the tank for a go around.

Multi-pin connectors, look on RS supplies (used to be radiospares) for D plugs and sockets (like on the backs of computers!)