Jef,
The struts do not come with the Spring Air gear.For the 349.00 price you are getting the 402 Spring Air retracts themselves along with just wire legs(not functional struts)What I did was buy JUST the retracts themselves from Patricia for 299.00 and then I ordered Robart struts from my LHS-if memory serves me right the nose strut was 39.00 and each main strut was 57.00.I'd strongly recommend going with struts and not using the wire legs -granted you are gonna spend more with struts but they are well worth it in every way.
I used the same wheels & brakes that you are buying(the Airpower disc versions )These are great units-you'll be very pleased with the wheels & brakes from Airpower teamed up with the SA retracts & Robart struts
Steve