This is all a rough guesstimate, mind you
1 hour to replace that oil pressure sensor, if it’s reasonably accessible
Perhaps 2 hours or more to replace the mounts. Apparently, you have 2 electronic motor mounts, and 3 “regular” mounts. Might want to consider doing at least both of the electronic mounts, and the others as needed
As for that barometric pressure sensor code, I’m not sure if you even have a separate sensor. The barometric pressure sensor function might be built into something else, like a control module or another sensor. I can’t help you with that.
I don’t know what physical condition your van is in . . . for example, does it look good, or is it all dinged up and rusting . . . but if it’s still looking pretty good, it’s worth fixing and getting perhaps another 5 years out of it. But rest assured, there will be some other repairs, such as cv axleshafts and shocks. I hope you’ve been servicing the automatic transmission frequently, because that COULD be the next big thing
In any case, it wouldn’t be prudent to try to sel or trade in as is, because with the shaking and check engine light on, you’ll get lowballed for sure