You're doing awesome! Make sure to keep your passive productions going at all times, you don't want to run out of fertilizer or drug ingredients, or else your exp will stop as well. Those produce over time, so you want them going so you can earn exp while you level other skills.
Also, you may want to shift your focus away from the high rise for a bit and invest in your drug operation (which will end up making you more money in the long run). 4 high-rise unlocks is a lot for lvl 13 growing. Very impressive though! You're doing awesome