If I ever sell on Amazon/Ebay I might simplify, but the tools on the main page aren't that difficult to understand, illustrates the range of possible light intensity and helps plan for individual wants. There are some tents like 2.5x4 that I don't provide information for and I can see how that would cause issues. I'm constantly thinking about, may make changes eventually.
@Rman18 I think a couple T2s would be a good fit for that space.
2 T2-1750s would provide about 650 PPFD. These are available and would be a good choice
2 T2-2100s would provide about 740 PPFD. Also a good choice if you don't mind waiting a couple weeks.
I will be offering several T2-2100s soon, within the next week or so as long as Cutter doesn't let me down (They were supposed to ship me a batch of COBs this week but didn't follow through on their time estimate.) I will also have some T3-2100s available in the same time frame.
Other options:
1 T3-2100 would provide 560 PPFD in your space.
1 T3-1750 would provide 490 PPFD in your space. A bit low, but still much better than a Bud Boss. Bud Boss = 150 watt input, so maybe 130 watt output at (?) efficiency. T3-1750 = 186 watt output at 53% efficiency.
T4-1750 would work too (same as 2 T2-1750s), but it will be a while before any more hit the website that aren't already spoken for. On the extreme end, 2 T3-1750s would fit well in a 2.5x4 and provide about 1000 PPFD.