Hey Badger, Ken has given you some great advice there and you might give that some thought before you leap into PE.
I really enjoy working with PE and seem to have a knack for it but since the model manufactures are getting better at design you don't need to dress up your build as much as in the past.
PE is getting more and more expensive these days and the producers design and package the sets to maximize profits but if you feel like giving PE your best shot would this be enough for you?
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Griffon PE set plus what was in the Dragon Brummbar kit
Good Luck with your quest
Tony lee