S2L, just remember... You're tall - A compact frame will need a long seatpost. This tends to be used as a lever by your body and the seat tube or seatpost might break. When a lot of power is exerted on a chain using low gears, it tends to stretch much faster than using a lighter gear and will wear the rest of your running gear. Also keep in mind that the chain might break.... Using your gears to your advantage is something you need to master yourself. Best is to use a gear ratio that you feel comfortable with. When I started cycling again, I also did not believe that you can spin faster up a hill than using raw power. All have to be in balance. Spinning does not mean you have to use the lightest gears. Aim to have a cadence of between 65 and 80 when going up a hill. Going slower than that means there are a lot of strain on the components as well as your knees. If you can go uphill with a 52-17 ratio and have a cadence of 80 you will be flying uphill. What I understand is that you have a lot of power in your legs. You can use it to your advantage, but don't overdo it.
