Option 3 would give you the most possible yield if that matters to you, and I would go with a HLG 260 XL for the better spread. 2 SF1000s are a little under-powered for a 2x4 for best results being only 100 watt lights.
Out of the first 2 options, I would prefer option 2 and you can watch the HLG 135 outperform the SF1000.
Really not a huge benefit IMO, I can adjust heights just fine by placing things under my shorter plants to raise them up to make an even canopy, I’d rather do that than have lights at different hanging levels.
I’d go with a 6" fan for a 2x4, specially if planning on using a carbon filter.