Does the mast come with all the fittings and standing rigging ?
If yes, then you are probably ahead. Don't try and use the furling extrusion. Poor airflow plus the likelihood that the thing will be very noisy...wind whistling through it noisy.
On a 35'er the mast extrusion by itself is probably not all that expensive, its the bits and pieces that casue the real damage to your wallet.
"Said Hamlet to Ophelia, I'll draw a sketch of thee.
What kind of pencil shall I use? 2B or not 2B?” Spike Milligan