Maybe a solid state modelling amp is a good choice for you and you'd get most or all the sounds you need. You'd be limited with the old Peavey, so if you are going SS, you should take advantage of 30 years of advanced technology :)

There are 2 that I read about all the time. The Fender Mustang and the Line 6 Modelling amps are super popular. I've heard better things about the Line 6 version. I see Mustangs up for resale often, and that can be a negative indicator.

I forgot to ask, if you plan on playing with a band or just alone. That will determine the size of the amp. I think you'd want a good 100 watts with a SS amp to keep up with drums. I got a 'live inheritance' from my Dad of an old '74 Traynor SS head that is 100 watts output. He used it with live band on stage for more than 20 years, so 100w would be good enough I think.