SSD now days have really good durability so don’t worry, i’m pretty sure you will change the drive before it even manages to break due to high read/writes. Go ahead and use it for paging. Also a tip i got from others is to set your paging file to a fixed size. For example: if you have 16gb of ram and need 16 more, set your paging to min: 16gb max:16gb. I don’t really know the math behind it but it works for me so who cares 
I have 16gb of ram plus 8gb of fixed paging and doing fine with intensive use of maya, substance painter/designer, ue4 all open at once most of the times. I thing it would be best to invest a little money in more ram but it good enough for now.