Goof Proof Patch Antenna for 900-1200MHz
That is great news. Congrats!
Performance will be even better if you build it for the exact frequency you are using (down to the hundredths of an inch). The losses expected when it is not a accurate match are a bit high, due to resonance issues.
When you have the time your should build it as such. You will get more gain (or more precisely put, you will eliminate the match losses). I would expect another 2 or 3 dB's, which is certainly worth the effort.