RE: First time builder... Needs advice.
I love my Zona razor saw. Don't know how I got along without it all these years but it's probably the most handy cutting tool I own. Make sure you get the really fine tooth one. Toss the Stanley knife and get yourself an Exacto with #11 blades ( lots of them !!! ) I have a bandsaw that really comes in handy doing the rough cuts on wingtip blocks as well as long cuts such as cutting out fuselage sides. Make sure you have some 30 min epoxy, wood glue and some CA on hand. The rest of the little " it would be nice to have" tools pop up along the way but it seems that all your basics were covered. Being a carpenter I'm assuming your build table is straight and level. If it doesn't bother you to do this ( this is what I did ) just screw a piece of drywall fast to the table top all the while making sure it gets pulled down even. I use a straightedge and level to make sure it's down flat. Makes a great table that takes pins well.
If the GP Cap goes together as well as my GP Extra, you'll have a great time building and a better time flying. Not much about my Extra kit to gripe about.
Dan