nah. that'll be unwise.
the ryzen 5600 should be the last upgrade you do for that board. and for AM4.
AM4 is a dead platform, I wouldn't invest too much into it. Much less your consideration of getting a new AM4 board. get that idea out of your head now lol.
your next upgrade should be a full platform change to whatever is current when you next upgrade.
if you're happy with the 240gb ssds then yeah, you could chuck them in i guess.
personally prefer one massive boot/games drive than multiple dotted around. but for the price of free...can't really argue
sell computer (2) as described in my earlier post and you'd find a majority of your funds for a used 3060ti from cex that also comes with 2 year cex warranty