Why are you afraid of installing the flaps? All you have to do is take a few plastic clips on the bumpers off, then slip the metal bracket RA included in and put the clip back on. Pretty simple and straight forward.
Clear bra installation will be very costy. The dealers usually want $800-$900 for it. If you go to a tint shop or a vinyl shop it will be around $500-$600. If you can do it yourself you will only have to pay for the material (Multiple 3M pre-cut kit on ebay/amazon for $250 or so).