EI allows you to dose fertilizers liberally, always knowing you will not have a deficiency of any nutrient. But, the price you pay for that is having to do 50% water changes every week. If those big and frequent water changes are not acceptable you can't use the EI method of dosing. Instead, you should use a leaner dosing method such as PPS Pro. Both methods use the same chemicals, just differing philosophies and differing dosage schedules.
If you raise the light by suspending it above the tank, instead of resting it on legs on the tank, you have a lot more flexibility for setting the height, and it is a lot easier to get the light out of the way for maintenance. You can either hang the light on cables or chains from the ceiling or from brackets, or you can try something like this:
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