Hi Mate, nice start, I've started somewhat like you.
UP is a great product. I also have M205, but when I want a killer finish on a dark vehicle that will be followed with Meguiar's Ultimate Wax, I look no further than UP. It finishes nice and have a lot of fillers (which I consider good when working by hand), all of that compatible with Ultimate Wax (no bonding issues here). UP enriches and darkens the paint.
I would recommend for you to get Ultimate Wax (paste or liquid), I use paste and like it, but liquid don't stain trim so that's a bonus because you'll get the same results without the 'mess' that sometimes occurs when wax dries on trim.
If you also like to work by hand, I would recommend for you to get lake country applicators, they go as far as you can go by hand.
EZ Grip Hydro-Tech Hand Applicators Trio - Your Choice!
Have you ever used a clay alternative?
Nanoskin AutoScrub Fine Grade Wash Mitt
With these 'beauty' you can wash follow to clay while washing using shampoo as clay lube, and you'll gain a lot of time without compromising results. Works really well.
You can also use 'cheaper' alternatives, like the sponges:
Nanoskin Autoscrub Speedy Prep Sponge Combo Pack
Now, if you really like what you're doing, consider (seriously) ordering a polisher. Every day you delay to buy it, is another day to regret when you buy one.
Hope my tips were helpful, please, tell me what you need more and it'll be a pleasure to help.
Kind Regards.