#3
If you could tell us what that guitar is as opposed to just giving us a picture, I'd tell you. So long as you have the cash to buy yourself a good amp and/or a better multi-FX than you have now, I'd say yes anyway.
#6
In which case I'd say go for it. But if it's tone you're after, you'll be wanting an amp.
#8
It's listed on Musicians Friend for about $300 and got fairly decent reviews so it might not be a bad investment.