No one can tell you what to do. It's your money, you call the shot.
One thing for sure: DELL IS A DONE DEAL. It said that it still needs the shareholders approval and that's never a problem to obtain. The price is $13.65. DELL will continue to trade at around $13.65 until the symbol disappears.
The ballgame's over. No $15, no $18 or some laughable higher amount. My advice, for what it's worth, is to sell very soon, get your $13 and change, research some companies you'd like to buy, hold the capital for a general mkt pullback which may happen during the next few weeks, then buy. DELL is over.
You have to wait a lot longer than 45 days to get $13.65 - that is the period for competing offers. Shareholders don't get paid until the deal closes (after shareholder approval) - I've seen July mentioned for the deal to close.
If I had a loss in a Taxable account I would take the taxable loss and get my capital back and put it to work. The worse thing that could happen is for the deal to fall through and be stuck with DELL stock that will drop like a rock.
They control earnings and they will not be good---you can bet on it. Also, I am guessing they will cancel the dividend.
The Institutions either say no or a third party comes in or the deal happens at $13.65