I believe the Nighthawk uses P100's which are no longer in production, Steve might have a few though, the good news is the new P1X is a direct replacement but even better. Send Steve here at GWTW/Chico Kites an email and he can probably confirm that size. Some used P90's for the spreaders some used P100's.
I have no idea on the Vision & Premier is very secretive about their products to the point they don't even want you to see them. Maybe Steve can get those specs too.
Order a couple extra spars & an extra ferrel or two, most Skysharks use the same, maybe two shorts for leading edges and a long for the center T. A bit of 1/4 inch inside diameter vinyl or rubber tubing from the hardware store, that you can split to glue over a tube when a C-Clip breaks or work over the tube if replacing a spar. Maybe a couple sizes of the Safety Nocks
, you don't have to glue them on the field, just slip them on and replace them with the proper one when you get home.
Tools and supplies needed, a foot of Tedlar Tape for sail repairs, some Super Glue, the Gel type is best for our purposes on the field. A FINE tooth hacksaw blade is OK for cutting spars, a Dremel is better, just go slow and rotate the tube with the hacksaw, don't try to cut straight through you'll split it. You really should have a Sleeving Tool and sleeving in case you need to repair or balance your lines, I see Steve has the Prism Kit
that comes with wires and everything, have Steve send a couple feet of extra sleeving at 15 cents, you can reuse those wires. Some scissors, maybe a razor blade or X-acto knife. Some blue painters masking tape can help with cutting spars and doing a sail repair by super glue or Tedlar, tape one side of the sail with it to hold the fabric in place, then do your repair on the other side. A marking pen to mark lines if balancing them. A bit of Bridle Line to replace frayed or cut tension lines. Oh and a lighter to seal line & sleeving ends.
For field repairs that'll do you, I don't even carry that much anymore. I used to carry more and never used it so I lightened the bag. Since fittings and nocks are not standard you need dozens and are you really going to sew anything on the field?