Regarding DCA: my thinking would be to invest the entire $50k now, just jump. You DCA with the set amount you decide to take from your paychecks. The same way your retirement accounts are paid. I don’t get caught up in the DCA concept beyond the simple idea of continually adding to my investments on a regular schedule whether the financial news is good or bad.
That said, I’m taking a 18 month break from investing to save for potentially buying a place and/or having a suitable EF if I need it because of Covid or to take advantage of any bargains. Once I accomplish that goal, I’ll return to investing my set amounts.
Best advice I took in was to make everything as simple as possible, and aligned to your appetite for being involved. I’m not great with this stuff, so I went super simple with a Lifestrategy account, my regular checking account, a HISA, and my retirement account. Uncomplicated and straightforward, just fill your buckets and let it do its thing.