I guess that you have not sailed your boat yet, so let me fill you in with a few things. I have a turbo 14 and love to sail it. I usually sail it with my daughters. The 14 with a jib sail has a tendency to put a hull under the water and flip your boat when you are at speed. To avoid this, you will need to keep your crew's weight towards the rear of the boat. When sailing at speed. The boat is fastest when you are skimming one hull on the water. Two hulls in the water create drag, and if you fly a hull the sail becomes inefficient and you slow down. Just keep the one hull skimming the water.
The over-sized jib sail is a bad idea, because a jib sail will push your hull under water when at speed. I have the appropriate size jib sail and I have to be careful as to how I set it. I usually run it a bit loose, as this helps to keep the front of the hull from getting burried. Visit my site:
Download the Nissan video from the video section and you will see what an extreme pitchpole looks like.
Tacking is a skill that only comes with practice. Sheet in your main and gain some speed, turn into the wind and release your main sail. Grab the mast, bring it across and push it to the front until you boat crosses the wind. Move to the windward side, release your jib sail and cleat it on the other side. Sheet in an continue in a new direction.
If you end up in irons (stalled), continue holding and pushing the mast to the front and reverse your rudders. Do this the moment that you realize that you boat has stopped. This will allow you to complete the tack. Straighten your rudders and continue in the new direction.
It take practice!
Good luck and enjoy sailing your boat!