IMO you will be way ahead in quality optics by going with BOBO's Burris. I have had one on my .270 Weatherby Magnum, Model 70 for 23 years and it is still one of the best set ups I have had and still have. Yes 3-9 is enough. If you live close to Garland I will meet you at thee range help you mount it, bore sight it and sight in.
BOBO that is a very kind and generous thing you are doing.