I had wondering about something like this Zoom eye piece.
The 4mm eyepiece was pretty useless :/
My camera body weighs 1.3lbs, which could be reduced by removing the battery and substituting a power adapter (though the cord could be an issue)... which might not be a bad idea if I'm doing long exposures, or time lapses.
I've had a lot of success with this, I have an 8 inch dob and it does everything I need it to do. The only other thing I recommend, and this might be something you look for later on, is a larger (38-42mm) wide angle eyepiece for larger objects like the Pleiades and the double cluster.
A telescope is not out of your range if you know what you really want and can save for it. I have a "smaller" one, but having a larger diameter opening allows you to capture more light and peer deeper in to space. You should get what you want and strive to save for it. I want to go bigger, maybe an XT10 computerized.
My telescope is good, in fact it over-preformed every time I went out. The one gripe I have about almost almost every inexpensive telescope is that it is not motorized. We live on a spinning rock in the galaxy so the telescope needs to be constantly adjusted. All you do with the motorized is find 3 stars and it can take you on a tour of the universe. It does a lot of the work for you so you wont accidentally lose what you were looking at.
I'd also recommend buying some filters, It helps when you look at the moon or nebulae.
Also, instead of swapping eyepieces for closing in on objects, this zoom lens is extremely helpful. With just a twist you can go from 8mm to 24mm. I own that exact model and it's great, plus you cant lose
It seems expensive, but if you really want it, you'll find ways to save and get it. I hope this helps and when you DO make a final decision I'd like to know what its is.
Billions and Billions
Most of the higher magnification eyepieces are redundant when you have a 2x barlow so I can't say they're giving you a lot for your money on that part (using a 17mm eyepiece with a 2x barlow will give you similar results as using an 8mm eyepiece for example). I also don't know what quality they are from the picture alone but I would guess only slightly better or on par with the bundled eyepieces you get with your telescope out of the box. The color filters and moon filter are about 30 to 50 dollars for a bundle.
I would say don't get this, and instead invest in a decent low power eyepiece (30mm to 40mm) and a zoom eyepiece (something like this if you're on a budget https://www.amazon.com/Celestron-93230-24mm-1-25-Eyepiece/dp/B0007UQNV8) and a 2x barlow (https://www.amazon.com/Celestron-Omni-2X-Barlow-Lens/dp/B00008Y0TM)
With the zoom eyepiece and a 2x barlow, you can get any sort of magnification you want. Of course it won't be as good as a dedicated single magnification eye piece, but not having to switch out your eyepieces all the time will be very helpful. For the moon and wide views, the 30-40mm eyepiece will be nice.