You scored an amazing deal and it sounds like you're already getting your money's worth and will no doubt get healthier in the bargain. BTW, I have CR420's and I weigh in at 220 lbs and have had no issues with them.
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'00 TiSports Titanium - DA 9 speed------ '01 KHS Flite 800 - DA/Utegra 9 speed mix
‘02 Ellsworth Flight - Ultegra 10 speed -.'03 Basso Coral - Ultegra 10 speed
'03 Specialized Allez Pro - DA 10 speed .'04 Scattante CFR Limited - DA 9 speed
'05 KHS Flite 2000 - Ultegra 9 speed -... '06 Flyte SRS-3 - DA 9 speed-------
'05 Serotta Fierte - Utegra 10 speed--..-'07 Pedal Force RS - SRAM Force