Can anyone comment on the setup im thinking of getting? This is my first experience with AP

Galaxies and DSO for sure 

You are on the right lines but the mount you have specified is not good enough for astrophotography. Also a DSLR is ok to start bot a dedicated astronomy camera will give you much better data. I started the hobby in January and bot have i learnt a lot in that time. The main thing about galaxies is getting lots of data. i use a mono cooled camera with filter wheel and try to get at least 5 hours data comprising individual 5-10 minute sub-frames. Getting good frames of this length requires accurate tracking and the mount is key to this. IF you can go for an HEQ5-Pro. i know they are a lot more expensive so look for a second hand one in good condition. With poor tracking and an overloaded mount you will get very frustrated. Also if you are set on a DSLR get a second hand Astro modded version of a canon. This will allow a bigger light spectrum and you will be able to shoot nebula. Standard cameras have an infra red filter. this blocks the amazing red glow from the Hydrogen Alpha gas in nebula and galaxies. Be prepared for hours of learning this hobby but remember when you see the first photo appear its all worth it! BTW if you go Canon get the software program Backyard EOS as it will run your setup for taking a sequence, also get PHD2 for tracking and learn both. There are no shortcuts in this hobby!!

Keep in mind that it's mostly the mount that makes the image. Start with a good mount and a cheap scope. The scope can easily be upgraded later when you know which direction you are heading (widefield vs. PN for example), but the mount can stay the same.

Budget is always a consideration
id say looking at your shopping list that will get you going
You have followed the rules, putting the best part of your budget into the mount, good stuff
I would add that a full spectrum modified DSLR will do a bit more justice to those big Nebulas
Good luck

Do you have information on how to remove the filter on the 1100d? Im more than happy to take it apart. Cheers!

Hi, I use Sky-watcher 130 PDS OTA for more than year now & it's fantastic small & portable OTA for DSO imaging. Particularly suitable for nebulae & open clusters. May not be great for small galaxies or planetary nebulae. But still good choice for beginner setup & value for money.

The other good tutorial on modifying DSLR's is:
http://dslrmodifications.com/rebelmod450d1.html
There is some risk in doing it of course, but I have been successful with both a 1000D and an 1100D. The main thing to remember is to be careful removing all the ribbon cables and be sure that they are fully seated when re-attaching them.

Like a couple others have said, the ramifications of doing the full-spectrum modification are that the camera becomes sensitive to IR light and you need to have a filter to block that somewhere in the imaging system. The other issue is that removing the filter glass adjusts the focus point of the camera somewhat. This doesn't matter for telescopes but it can prevent the camera from being able to focus-at-infinity with DSLR lenses (doing Milky-Way shots for example).  A company called Astronomik does make a clear (non-blocking) replacement glass for most of the Canons to restore this:
https://www.astronomik.com/en/photographic-filters/mc-glass-for-dslr-astromodification.html