TY Senior Sails

[Woody Norwood]

I think the sails that came with my new (1985) TY Senior might be the originals, made by Horizon, called "Horizon 2000). They look pretty worn. The main has 4 full-length battens and two reefing rows. The main attached to the mast and boom using nylon bullets. The genny is, I think, a 160. The boat also came with a storm jib (an 80%). I am thinking the original theory was to put a roller-reefing humongous jib on and then replace it with the storm version when the wind kicks up. Here are the questions:
1. Is it still the current preference to use nylon bullets to attach the main to the mast and boom? Or, do the newer sails go into the slots with a bolt rope?
2. Does the current preferred set-up still use full battens n the main?
3. What is the ideal size for the genny, assuming that one has the option of going to a spinnaker off wind and the plan is to both cruise and race (even when not racing I like to get the most performance from my boat?
4. As a practical matter, can you change the jib with reasonable ease while at sea when it is on a roller furled?
5. Who makes the best sails for the TY Senior? (I am inclined toward FX)

As a note, my inclination would be to go to a 120 or 130 jib and a spinnaker...but I need your input.

Thanks