Good & upgradable telescope for beginners

I need your help selecting a good telescope. I am just getting started with astronomy. I thought of buying a small telescope but that can be upgraded later on. So, I thought of buying the Meade N-6 EC on LXD75 with the Celestron Eyepiece & Filter Kit.

Thought that I will be able to use the LXD75 with a 9 ¼ Schmidt-Cassegrain from Celestron or something similar to that. More total landed cost for the telescope is more than double because of freight and import duty (I am in India).

What do you think? Is it a good choice or I should go for something else?

How is the LXD75 mounting compared to the Celestron CG-5?

Can the LXD75 take other optical tubes like the 10” Celestron Newtonian, 9 ¼ Schmidt-Cassegrain, Meade 10” Schmidt-Newtonian, etc.?

Should I get the Meade Deep Sky Imager? I would love to see those beautiful images on my computer.

I have the LXD-55 with the SN-8 tube.
I like the mount and for the price cannot be beat. The LXD75 will be a step up to mine. I would recommend the following.
Buy the LXD75 and the AR5. Gets you into a pretty good refractor at the right price.
Then you can go after a cat reflector tube such as Celestron 9.25 which the mount should handle no problem.
I attached a picture of my Meade Mak 7" on the LXD55 mount with tube rings and dovetail.

Attached Image: