For now, I would save up money, and continue to use the storebought, it's a win-win situation; after you save up, you can bulk order all your cubes at once or you can buy everything you need at once (Stickers, lube, etc.) and by the time you have enough money for that, your Storebought would be broken in and it will be pretty good. You will also be able to control ALL cubes. My first cube was a Guhong which was very forgiving which meant that when I switched to a Diansheng or a storebought, I would always lock up. After a few weeks of only using a storebought, I broke it in and now I can control any cube without any lockups. But I still have to practice occasionally on my storebought. And if you order from lightake, don't forget a DS flash cart to play all your Pokemon games, haha.
