I bought this for a reasonable price off of Amazon and I am in love with it: http://www.amazon.com/Winsor-Newton-Cotman-Water-Pocket/dp/B000ILZAXI/ref=sr_1_1?ie=UTF8&qid=1435618291&sr=8-1&keywords=watercolor+half+pan+set

You should be able to use all of your same brushes, but these are actually pretty handy: http://www.amazon.com/Pentel-Aquash-Water-Assorted-FRHBFMBP3/dp/B00AX31TZO/ref=sr_1_1?ie=UTF8&qid=1435618309&sr=8-1&keywords=water+brush+pen

Also I'm a dummy - I just reread your question.

I would recommend these paints (about $13 in the US): Winsor & Newton cotman. They are good quality for their price and come with a nice array of colors. I'm sure others will have similar palette's to recommend that will be just as good - sakura koi, prima watercolor, finetec all come to mind. If you decide you really like and want to stick with watercolors for awhile, I would then suggest upgrading to the artist series versions and maybe getting some paint tubes.

These waterbrushes are nice because you can just fill the barrel with water. Another more traditional option might be a set like this - I haven't used these brushes specifically but it looks like a nice variety of brush types for you to get started on and the brand is good.