Sounds like you have covered almost everything but I didn't see mention of the battery. It should be a full size battery. I'd also only use a battery rated at least 800A EN, and upon testing be capable of 650A EN. The starter will crank the engine over with less than 300A but the voltage will drop rather low doing so. When voltage drops, current increases to do the same work. While the EZL will certainly be designed with safeguards, repeatedly dipping into the edge of allowable limits may be enough to eventually take out an EZL.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff