OK, there is a used CRATE Little Giant 3-5 watt head at my local GC for $150. Should I get that instead of the Epiphone Valve Jr. I was going to get? And if so, what cab should I use?

I play Blues and Rock, dabble in Metal, Jazz and Country. I play a Squier Strat ( ). And my current amp is a CRATE XT65R.