Theres a new motor bike in Davison

Sofa,
You're looking good. That will be a fun ride for you this summer. If I could make one suggestion that might keep you from having troubles it would be to secure the tensioner wheel bracket to the bike frame. Some of us use a bolt and nut, a 10/32 works great, and some use a self tapping screw. Whichever method you choose it is good insurance against the bracket loosening and rotating into your rear spokes.
It looks as if you could stand to loose one link, (actually two) then your tensioner wheel could be moved down to give you room for future tightening of the chain. The kit supplied chains are notorious for wearing (stretching) rather quickly and you'll want to be able to take up the inevitable slack that you'll get in short order. You also have room to move the rear wheel back a little which would also give you some tension adjustment. Good luck, ride careful and have fun.
Tom

Sofa,
Chain alignment is not super critical. I wouldn't go much past 1/4" to 3/8" lateral misalignment. If you engine is centered and the rear wheel is too, then any misalignment would be from the dished rear sprocket. The tensioner wheel alignment is more critical than engine to rear wheel. The tensioner guides the chain onto the rear sprocket while the engine is pulling and you want the chain centered when it engages the rear sprocket.
Tom