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Using the Toucam is the way to go, no need to get the IR filter, as you would have seen some of my shots and I don't use one.
You might like to buy a good quality barlow something around 2x. I think if you went any higher the scope would not handle the increased magnification.
An example of what I mean is this. I own a 10" meade that has a focal length of 2500mm and I add a powermate (barlow) of 2.5 times. So this is expressed as 2500 x 2.5 = 6250. Now divide this figure by the toucam approximate focal length of 6mm. So this is expressed as 6250 / 6= 1041 mag. Now in the specs on my scope it has a visual magnification of 650x. The above figure is obviously way beyond the useable visual magnification, however I get pretty good planetary shots. On nights of good seeing I use a 5x powermate. You can work out the sums. If I look in the scope with the powermate in and use a 12mm EP, the image is not very good because it is beyond the visual mag of the scope. The toucam is different to our eyes and can use higher magnifications.
So all you need to do is find the focal length of your scope and do the above sums.
Best of luck
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