OK, you're going to limit yourself, and what you can see with both a small budget, and also your personal requirements on a small/portable scope etc. You still should be able to view all of the objects that you've mentioned - fainter stuff will be either very difficult or impossible though. Some suggestions:
https://www.bintelshop.com.au/Product.aspx?ID=7046
https://www.bintelshop.com.au/Product.aspx?ID=6327
These are both on German equatorial mounts, which aren't quite as easy to use as an alta azimuth mount, but are easier to track objects in (along the RA, or right ascension path).
A similar scope, but with an alta azimuth mount might be this one:
https://www.bintelshop.com.au/Product.aspx?ID=8351
The last one will be the easiest to set up and dismantle, with the least parts. I think it would probably best suit your needs, at least given what you've told us in your posts so far. It won't see as much as your 6" dob, let's make that clear.
BTW, I'm not affiliated with Bintel - I simply used links to items that they sell as it was easiest for me. I would however suggest calling Bintel and speaking to Mike or Don and having a good chat with them. Both are extremely knowledgeable and helpful, and they give good ole fashioned honest advice imho.
Dave
PS If you can stretch the budget, I'd recommend this item:
https://www.bintelshop.com.au/Product.aspx?ID=8338