Currently, I do not own any Bitcoin but my plan is to sell all my altcoins later this year for (hopefully) decent profit and then buy Bitcoin only starting next year once it has crashed from the expected highs that we see later this year.
That would be a nice idea, selling altcoin to buy Bitcoin is the best decision you will make, if not that you expect to sell it and wait till later this year when you expect Bitcoin to fall, I would have just said you should sell and invest in Bitcoin now. Everytime is the best time to buy Bitcoin since Bitcoin is volatile in nature. Bitcoin may not dip to your expectations by then. And if you decide to wait till then before you buy, maybe you will use the fund for other purposes. So the earlier the better.
What price do we think it can be then? I am expecting it to be at least $400k and if that happens I plan to sell all the Bitcoin I manage to acquire and pay off a big chunk of my mortgage (I bought my first house 18 months ago and want to pay it off asap).
In as much as we expect Bitcoin to surge high, I don think $400k price will be achieved by 2028 because that will be 3.8x of Bitcoin current price now. But however since Bitcoin is unpredictable, no body know if that will happen by then. But all I will advice is that you shouldn't be optimistic about that price range and hoping to cashout some bulks to settle your mortgage because it is completely wrong to place target or put hope on a volatile asset like Bitcoin, You may be disappointed if things turn South.