Happy New Year! Your kit is looking great, I can't wait to see it with the flight suit dyed. You're like me - I make great progress and then stop for like 3 months or so before diving back into it again.
For the EE-3 - I had the one that you are currently using and also noticed how small it is after putting it together. Someone else released the same model (but correct scale) on Etsy though for like $60 and I ended up getting that one - then I really realized how small it was!
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At first I was bummed that I would have to build it again but I think its fun putting these together and painting them. I added the screws under the barrel by cutting down nylon screws and attaching them with super glue to make them a little more accurate.