There are several things that you want to consider, glare, shadows, and power consumption.
The lights that you're considering are fairly high power lights that would be blinding if you were to look straight at them. It's best to use low power led lights. Just use more of those lights to get the brightens that you require. Try to locate the lights so that your eyes aren't constantly falling on to them, but remember that if they are behind you, your body will be casting a shadow. That's why I added a few small lights under the floor of my permanent to deal with the shadow problem.
The lights are also too big in the wattage department. They give off more light than you need for your application. They will also drain your battery too fast. Your 7 amp/hour battery will supply you with 84 watts in total if the batteries are in great shape, even less if they are old. The 36 watt lights will only last about 2 hours on that battery. The 15 watt lights will run for about 5 1/2 hours.