Hi - I've re-entered biking after a 20+ yrs hiatus.......am riding my son's old (~2002) Trek 4500 alpha, 15". Am in shape - did 38 miles today after a month back at it. I'm trying to figure out what will be best fit and type of bike for me (I'm around 4'11 1/2"), and I've been told by various other bikers it's too big but I kinda really like it. I don't really have any plans on off-roading, but love the thicker tires and frame (used to ride a Cannondale). I feel like I can hang on this one for awhile but the shoe question comes up too (using sneaks). Ideas?