The sonic result of using a tube linestage feeding a solid state amp can be a little more unpredictable than solid state feeding solid state. You should research impedance matching between linestages and amps. The ideal electrical match would be a low output impedance of the linestage feeding a very high input impedance of the amp. Tube linestages tend to have higher output impedances and solid state amps tend to have lower input impedances meaning that there might be an electrical mismatch that will hurt the sound. Supposedly, the input impedances of the amp should be at least ten times the output impedances of the linestage to avoid such mismatch. But, even where there is no electrical mismatch, I have found that the sonic result of such a marriage is a bit unpredictable—a really good tube linestages may not sound very good with cerain solid state amps.
There are some practical considerations you should also consider. Tube gear should not be left on all the time, while some people leave solid state gear on all of the time (solid state gear takes much longer to warm up and sound good which is why some keep it on). If you intend on turning your tube linestage off or on while the amp remains on, you need to know if the linestage will emit loud noises while going through turn on and turn off. If it does, you may be forced to turn off your amp each time you end a listening session and you turn off the linestage.