Thats the kind of question most people would like to ask when investing in Bitcoin. They heard just a few hyped and the unprecedented Bitcoin ATH last 2017, they automatically think Bitcoin would make them rich in the next few years.
I know we are all positive about this thing to happen in the future , but the risks is always there. You might change your mind in the middle of hodling because your target price/profit didnt meet your expectations on time, and start selling just to cover your loss.
Nevertheless, the decision is still on you, Bitcoin is capable of giving good returns more than your loan and the interest. Who, knows it might work, but thats a pretty huge amount.
Life itself is risky, if you don't take risk you will never know how far ahead you can get, the btc early adopters took risk investing and believing in btc and today they are in control over the rest of people, ofcourse nobody can guarantee what will happen to price in next coming days, but sometimes we have to take risk to achieve our goals in life,
Since from all time high btc has gone as low as 3k and back up to 8k when most people thought otherwise, op has a stable job that can enable him payback his loan, all he need is excercise some for his investment to yield profit, if we believe btc will surpass this current price in future then there is need to panic about little drops in price at present.