+1 for pedal extenders. Knee-savers are pricey, check eBay instead.
There's a guy who sells them for $25/pr -- I bought a pair from him (when they were $18/
pr!), and they're just fine (as long as you're ok with the one and only size he offers, which is 20mm of extension). I also found a nicer pair made by Specialized for about $20 on eBay one time, they had allen-holes on the bolt-end, which is nice because you can get a wrench on the outside and extra leverage from the other side of the crank to get them off when they're set in. So those are good options, if you want a precise amount of extension for a careful fit, you'll probably have to go knee-savers.