For that price, and the working class quality of Mars Hydro gear, its a no-brainer!
And, lest I come off as a "lumen torturer".... pop22 is absolutely correct. Two 300s in a 4x4 will grow, respectably! But, I reckon 4 would "Rock the Room"!
I have immense respect for companies like GrowNorthern and Neosol. They are THE cutting edge of LED tech, methinks. But, Mars fills a huge gap between the price point of the elite manufacturers and the need for quality, value priced panels.
I'm a fan, for sure

And, I can't waste time with lights that don't cut it. I have patients with medical needs, and I need to depend on my panels.
(This has been a non-paid shill for a company that makes good stuff, and doesn't shark you on the price. That is all... lol)