That looks like a decent bike, dual V-brakes, but your carb won't function sideways like this.
I know, it's not attached, just funing with ya ;-}
I would however suggest you loose all that rubber in your motor mounts and bolt down hard to frame.
The simple rule of thumb test for a proper engine mount is to grab the top bar with one hand and the top of the head with the other hand and shove back and forth as hard as you can
, if it moves AT ALL that is a fail.