Hi MiL, Your plane is looking really good and in short order too, didn't take you long at all to get this far. Your about half-way I think. I told you the wing-mount would be a trip. When it's done it comes together nicely though.
21st century is the best iron out in my opinion, I would bet in most everyones opinion.
For the cowling, if your going to use the ABSplastic, there's putty that called "squadrons". You can get it at your LHS. It comes in white and green, obviously you want white. It will totally work for the seams, and you will never know they were there. I sure hope your cowl lasts longer then my first plastic did. StansFiberTech's is about $55 or so for the cowling and wheel pants. If your not going with a big motor, you will get alot more out of your cowl then I did.
It is a nice kit, and well thought out. I'm not sure if your aware, it was designed by Mike Cross, he is husband to AnnMarie Cross that helps us out in most radio forum, and she is product support manager for GreatPlanes. They both also designed the 33% Extra from GreatPlanes. I have my eye on that one. After I finish my Midwest 27%, just seem to want bigger these days.
Anyways,,,,,,,,Good Job man.....your well on your way to a very nice plane. Congratulations.