I'm guessing that you pretty much made your mind up that you want a pole for your spinnaker. I'm with you. I have a spinnaker that came with my boat (called an Ulmer "Flasher") but I had no pole. Attaching the tack to the forestay did not work very effectively. The problem was that the deeper downwind I tried to go, the more the sail just collapsed behind the main. It essentially only worked at a point of sail where an assym is a better choice.
But I still wanted a downwind sail, so I bought a Selden adjustable pole right here on this store. The smallest size works for your boat, as it does for mine. The bonus is that the pole is adjustable. At design length, it is a spinnaker pole. It extends to whisker pole length for use with your head sails. It uses pushpins for the adjustable lengths so you get just two whisker pole lengths, but they happen to match the foot lengths of my 2 genoas. It is 2 poles for the (low) price of 1. The only downside that I can find is that it is a little heavier than a dedicated spin pole ... but using the topping lift, I don't think I will notice a problem with the weight.
The best reason for having this pole for me is that it useful when I have crew for using the spinnaker, and it is useful to pole out the genoas when I'm singlehanding. Unfortunately, I have not used this pole yet, since I just acquired it during the winter. But, I anticipate that I will find it most useful and a great acquisition.
I'd look into it right here. SBO offers the best price and it was delivered to me in NJ within 2 business days from ordering. Customer service from SBO is the BEST!