OP, the reason behind my first response is because something like 60% of your shots are from 100 yards and in. You might not understand that until you play 100 rounds of golf. Anyways, if you have a good short game, you can still beat the guys who are driving it 260+. Bench press, upper body strength,etc- none of that matters...hell you might be able to drive it 300. I played football/golf/basketball and always worked out and played golf but my golf teammates all had a longer drive than me. We had a good team, won state once, but do not be worried about your strength. Like others said, mostly has to do with technique and clubhead speed when it is coming through the ball.
Also, as much as I love having nice equipment, when it gets down to it, the brand of club your swinging matters very little. At my home club, the best guy there, has played in a couple of PGA Tour Events (St.Jude Fedex Tournament) and one day my dad had some super old driver or 3-wood in his trunk. Probably 1970s model. No graphite, titanium, whatever...anyways he teed it up and hit it right down the pipe about 290 yards.
http://www.warriorcustomgolf.com/subscribe.php
You can get a free wedge or two at that site.
If you want to go ahead and start playing rounds, because practicing golf can be boring, I suggest getting a hybrid set. What this means is that your 3,4,5 irons are going to be half-iron/half-wood, 6,7,8 will be a forgiving iron, and the 9,PW will be just a normal iron. This would be your best bet imo.
Go to Dick's and tell them you want a cheap hybrid set and they will know what your talking about.
Sorry if this turned into a rant, good luck, golf is a beautiful game.