It's a very slight bend, so I think it will be OK to fly the way it is. Any effect can be trimmed out easily with the trim controls.

For your maiden flight, don't forget:
Do a range test to make sure the TX/RX range is good - the manual covers this
It will be better if there is no wind at all, but certainly less than 5 mph if you just can't wait for a perfect day
If there is a local hobby shop around, change the propeller to a GWS8060. The Cub will not stall as easily.
Give it a strong forward/slightly-upward push towards the wind with full throttle - like throwing a dart
Keep the Cub flying straight by using the rudder control until it is about 50 feet high
Then, reduce throttle to about 1/2 and adjust trim controls until it flies straight and even almost by itself
From then on, just have fun!

There are lots of suggestions in these forums on how to protect the Cub from those "unintended landings"
Here are the most important ones:
Strengthen nose by using spray foam -- it will keep it from crunching up on a crash
Reinforce front pins holding wing by placing a piece of foam between pins and top of fuselage -- it will avoid fuselage rips
Cover inside of cowl with clear packing tape -- it will keep it from tearing when crashing

I learned to fly with the J-3 Cub over a year ago and still enjoy it very much. It's a great starter plane.