Those look really nice bud I like the arkie mold it makes a nice jig, I am the same way I have 4 molds and want like 15 more. I have the shaky, smaller hidden eye brush jig, and original fb mold. I'm going to either order the swing head or a fb shaky head next. Although I really want a swimbait head too.
On the airbrush Im not sure what your looking to spend on one. The Iwata neo at hobby lobby is a great entry level brush use the online 40% off coupon and walk out for like 50 bucks. If you wanting a top of the line brush I have an extra Iwata hp-ch brand new in a sealed box. I was thinking about listing it for sale. I ended up getting 2 for Christmas and it had been to long to send either since they were purchased so far before Christmas. I think 160 shipped and insured would be a fair price for it.