Do it! Also, I've got some experience with surprising results. When I did a comparo at at a mild-tuning state, using semi-race suspension which isn't adjustable but is a fixed stiffening, the car that came out on top wasn't a Supra or RX-7, it was an FF, the Spoon Integra, because it had very stiff springs to begin with. The result was an almost uncontrollable bouncy mess, but holy crap was it fast! Even without being able to achieve anything close to a perfect lap this car was still faster than anything else, and way faster than it should have been given the peaky engine. My conclusion: while it may be work and consistent lapping will be impossible, the fastest times are produced with stupidly stiff suspension setups. So try the Escudo with stupid still springs and see what happens.
My old comparo:
https://www.gtplanet.net/forum/threads/best-of-and-between-class-comparo.261794/#post-7628364
Although, when you say you don't think that bumping is bad, you mean you'll go full speed into the back corner and ride the wall, right? While I personally don't count such a lap as valid in my comparisons and hot laps, I'm not sure that the 1:00.077 time didn't use that strategy (which I believe has been found to be faster around Trial Mountain.) Post a video if you can.