The problems I've encountered with coilovers in general involve putting ssuspension loads on areas not engineered as weight-carrying points. A shock absorber mount is designed to mainly withstand a pull, not a push as a spring-assisted shock will give. Shocks are usually intended to compress easily, then resist the rebound of the spring. I'm pretty sure you'll need to do some serious re-engineering of the shock mounts, top and bottom, to avoid damaging those areas when you start using them as weight-bearing points.
Jerry

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