Good start mate. You can continue to accumulate while bitcoin is not yet in a major bull run which may happen next year and in the year 2025. You might as well plan on transferring your bitcoins to a non-custodial wallet for safety purposes. But if you are planning to buy more like weekly or monthly with the same or even smaller amounts then you might not want to transfer them right away every time you buy. Bitcoin withdrawal fee in Binance is around $5 which is already 3% of your capital. So you can schedule your withdrawals to save fees. The most important thing is that you are aware and you know what you are doing.