Don't burn yourself.
50/50% is not a bad strategy. I see this market going 1 of 2 ways. I see it pulling back before 300 and maybe resting which would give you an idea of where a rough range of base would be. You could enter a position then.
Or I see it escalating into a real bubble and going up towards or above 500. Then it will crash heavily and you will have an opportunity to buy on the way down. On the way down might not be as low as it was a week ago, so again, thats not a perfect strategy either.
So buying 50% now, with the understanding that it very well might not be a great price right now and then buying 50% whenever there is a major correction hedges your bets assuming you are long term bullish.