The correct cold air intake will make a supercharged engine sound a little nicer, look great, and also supports further mods. It looks like you are NA though, which means as Justin said, you will get no noticeable impact on performance.
Do not replace your coils unless they are bad. If they are bad, replace with OEM.
Not having a supercharged engine really limits your options unless you are willing to put in some serious work. Maybe you could do a shift kit? While you are at it throw in a fresh trans filter and you will have a good portion of the fluid changed out. Not very hard to do.
COTY - 2012
Tom - 03' Bonneville SSEi', 00' Sierra SLE, 1980 Goldwing GL1100 Interstate