1. I use the Spinrite as well. It's expensive, but I use it a lot since I make a lot of arrows for myself, friends and other folks. I've had the best luck with that crester because you can get it to get even the tiniest wobble out of a shaft...helps out a lot if you're doing super thin stripes and stripes at the nock...the tiniest wobble will make the lines uneven.
2. Paint: for cap dip, I use an exterior water based gloss enamel from any paint store. Color it to what I want, thin with water and dip. I made my own dip tubes with PVC pipe...cheap and easy. Cresting paint: I use Testor's model paint. I flip back and forth between oil based enamel or the water based stuff. I can't decide on what I like best...sometimes it's based on color availability at the hobby shop.
3. Feathers: I use the feather chopper that 3Rivers offers. If you buy a chopper, here's some advice...before chopping for an entire dozen arrows...chop for 1 arrow. You might not be happy with the length or height...especially height. The ones from 3Rivers are too tall for my taste and end up slowing the arrow down and making a lot of moise. I ended up drilling out the bottom plate to make the feathers a little shorter than what the plate originally allowed...I'm happy with it now. When you chop, be sure to have a rubber mallet and a very solid floor (concrete) to hit on. If you don't have a solid base, you may run into issues...not chopping the feather all the way.
A burner will take a lot of practice and patience to get the wire just how you want it. Also, you run the risk of slightly burning your finish when you burn feathers on your arrows. It's not a big deal if you don't mind, but you have to do it quick to avoid it.
When I seal my arrows, I use Daly's ProFin. It's a bit expensive, but a gallon will last you forever...and it's tough as nails. It's ready to go out of the can...no need to thin before you dip. I do 3 coats...and sometimes sand with 0000 steel wool depeding on how I want the finish to look. Be careful with any oil baseed finish if you crest with metallic paint...you run the risk of the metal flakes running when you dip. I let my crest cure for a couple days if I use metallic and haven't run into an issue with ProFin.
Adam