The block on the starboard side you think is for the spinnaker is correct. Don't use the
furler block on the port side mounted on the pushpit.
It looks like the inner stay up forward is a babystay to bend the
mast, not to put a sail on. Since the babystay gets in the way of gybing the spinnaker pole that is likely the reason you have two spinnaker poles. You rig the second one on the leeward side just before a gybe, gybe then take down the old pole. Do you have a quick release on the babystay? You use one pole when the babystay is out of the way.
Do the spinnaker poles have different fittings on each end? They should for that size
boat to do a dip pole gybe or a 2 pole gybe. This will require lazy
sheets and guys.
The pole mounted on the
mast is likely a whisker pole to hold out the
jib sailing downwind. You will destroy it trying to use it as a spinnaker pole.
You will also need a foreguy that keeps the spinnaker pole from going up at the spinnaker end, unless you run lazy sheets and guys, where the guys are run through blocks
outboard near amidships. If you're going to gybe in any sort of
wind on that size
boat you should be running lazy sheets and guys.
You should browse many videos on youtube. Get someone experienced to show you how, or start
learning in around 5 knots of
wind. Spinnakers can be tricky.
If using the spinnaker for cruising in light winds, just get a sock and dowse it to reduce the complexity of two poles, releasing the babystay, lazy sheets and guys.
A diagram on one way to run the lines -
https://www.westmarine.com/west-advi...-Controls.html