A little help please

Hello everybody,
I'm new here and as a once a year outdoor grower I would really appreciate some help. I'm about to order a grow light for total cycle and for use as support with our unpredictable weather.

hope someone will shine some light on my questions.

I brought my choices for a led light down to Mars Hydro TSL2000 and the Spider Farmer SF2000. Leaning towards the SF, because of built quality.

In my search I came across Kingbrite and had great communiction with them. Their standard boards only have one light color to choose, instead of the 3000k and 5000k mix from Spider Farmer. How much difference would it make having the mix or only 3500k for use in a full cycle?

How important are the IR and UV leds? Is it worth the money to upgrade those from Epistar to Cree?

Thank you in advance for your trouble.

All the best from Belgium

Well there's a lot of threads to read about uv and ir and although I love some of my lights with uv the fact remains we all managed perfectly well before when we only had plain boards, strips or cobs.

As for 3500k vs mixed 5000k n 3000k, makes no difference really.

I run straight 3500k Cree cobs, they work great for a full cycle.

Thank you for your replies!