Firstly I have a 250px flextube.

I was looking that high power EP the one you only get to use once in a blue moon when seeing is perfect, but I also want one I can use frequently, I have just bought a baader classic ortho 6mm. I got it to complement a 4mm planetary ep I just bought. It will give me 200x in my scope so barlowed i will get 400x which I feel will be about max for me.

Is this a good idea or would I be better betting a 3mm ep. Also do you think I could go higher on mag, if so would a 3x Barlow be advised or getting an even shorter fl like a 2.3mm planetary ep.