I am not a pro, more of a babysitter these days.
But...
I would recommend bumping up to #65 spectra. I use Power Pro, there are some who dislike it, but it has been solid for me. I guess it would depend on how often you fish, again for me these days, my spectra will last 20yrs.

But if you fish regularly, I would just inspect it, for nicks, etc. You may just have to peel off 10-50ft.
Go to Fluoro over mono for a topshot.
I would recommend a shorter top shot. My top shots are 3-6ft, just depends how finicky the fish are, that way you are sawing with spectra.
Btw, I dislike spectra to fluoro knots. I use small high rated swivels. uni knots all the way around, maybe a palomar at the hook.
I am sure others with more experience will chime in, hope this helps.