Paul i think your dio will be more than worthy and more than able to "hold its own" in Euromilitaire. I think the good thing with placing it in this particular comp is the fact there will be those there that will give a good and honest opinion and you will know the high standards set. I guess it will be like playing in the Premier League for the first time !!!!!! They will give you a fair crack at it and you will know where to go with things after it.
I have entered a couple of my bikes in shows before. It is nerve racking cause you dont want to be pulled to pieces, buy i can honestly say ive NEVER seen anyone do that to a modeller at a show. For the most part our fellow modellers are a good bunch and give good honest help and guidance where they can, there are very few who deliberatly cause offence.
The standards you set yourself are of the highest order and i think you owe it to yourself to enter this one if you can finish it in time, there is certainly nothing wrong with finding out from a competetion of this standard just where you have reached.
I really hope it can be entered mate, it will make my day to see it there when i go. All the very best with it buddy, regards Martin