Your sails look fine to me, you need to apply luff tension on them so they stretch and fit properly. The bolt ropes MIGHT have shrunk but most likely you just need to properly tension the halyards, then the sails will fit, look and operate much better.
The boom is connected to mast via a sliding gooseneck. Dont secure the gooseneck. The procedure for raising the main is, leaving the goosemneck loose, raise the sail until it is up to the top of the mast and secure the halyard. Then, standing at the mast, using your arm put your weight on the gooseneck to push it down and put a clear stretch fold into the luff of the main, then secure the gooseneck in that position. Your boom should then be close to horizontal.
Dont put a strap on the bottom or top of the jib. Simply raise the jib with enough tension to induce a stretch fold in the luff, if necessary sweating the halyard (google that) as you probably dont have the convenience of a winch.
Before you go sailing, do something with the open horn cleat in the middle of the forelock, or your jib sheets are likely to hang on it, messing up the tack. Move it or cover it with tape...
Adding a boomvang is a good idea, somewhat essential gear. Your mainsail has a reef in it, be sure to find/install the clew reefing line, there should be a reefing hook on the gooseneck.