Nice trick with Heritage is its thrust tube. You just do not open scope fully and you can achieve focus wherever you want, but, you need to check colimation at that point. You can use focal reducer in this case.
SV105 is frankly sh*t and useless. I have it and even logitech webcam c270 is better, marginally. It cannot align because sensitivity is not good enough to capture stars and has no align points. SV305 is only svbony woth mention. it would be best if you could get some used camera with sensors 224, 290, 291, 462... or go down DIY route with Raspberry Pi maybe.
Jupiter is not god target to stack, go lucky imaging with jupiter, and postprocess.
I started capturing using EQ2 with custom tracking stepper, and it worked(https://www.flickr.com/photos/187112419@N02/ not the latest image that is new serup) but got eq5 now with onstep. Well worth it.