I've had an opportunity to check out some Vox gear over the last several months and I have to say, from what little I've seen anyway, that it's good gear. I think you're making a wise choice.
As for that classic Strat sound, if you find yourself jonesing for it and can't shake it, sometime down the road you can spring for a good quality Strat copy (provided you can't afford the real deal, of course) and then you're good to go. Or - ! You can wait a while until the emulation tech gets that much better. It's already a moving target and I expect that one day the difference between old school and new will be so fine most ears won't be able to tell the diff. I am amazed at how far emulation/modeling has come in the last couple of years. Makes me think that one day something like a high-end Variax or a super-versatile modeling amp might be something worth investigating.
In any case, congrats on making a decision. SGs belong in the pantheon of classic American electric guitars - they're so iconic and cool yet they are also true player's guitars. You'll have tons of fun with your new acquisition, I'm sure.