With the ToUcam at prime focus, you can probably expect to see something (size-wise) like the attached pic of Jupiter, which was originally a 2000mm FL shot through Louie's Tak, and then shrunk half size to emulate a 1000mm FL.
But also, that was through a 4" Tak. Your meade is not a Tak, and having the inbuilt barlow is certainly going to degrade image quality a bit.
To get a bigger image scale you'll need to use a 2x or 3x barlow in combination - i'm just not sure how much degredation in image quality you'll get having to go through two barlows. But it's certainly worth a shot.
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