^o^ Thank you so much for your helpful advice! I found this very informative! I've asked other artists in the past on various websites about their suggestions on watercolors or painting in general, and they either didn't respond or gave me 1 word answers :c
Ooh! Happy coincidence! I do have 300g (140lb) paper!...I should start using it more XD But it may not be as good as yours, since I spent $15 on a pack for 12 sheets, sized 16x12 inches. But, thanks to you, now I know what kind of paper to look for so I can keep an eye out when I'm replenishing art supplies.
Oh yes, I do find myself agreeing with that. Kolinksy brushes sound like at least looking into, which I will definitely do! Not losing brush hairs is a big winner in my book :'D I can't tell you how many times when I'm painting, I'll come across 6+ hairs strewn about the picture ;A; And yeah, they sound expensive but if they're gonna last a good few years, won't lose any hairs, and give me the ability to add more execution in illustrations, definitely worth for what they're priced :'D