Indeed this may be too much, I'd stay in the mid-20s, but maybe you could do a hi-tech low maintenance tank, which would look like a low-tech. By that I mean mosses, java fern, bolbitis, anubias, crypts but also a hairgrass foreground and perhaps a backdrop of rotalas or any similar species. That is, assuming you're going low-light for the look of it. If it's for practical reasons, then yes, I'd lower the lights.
BTW I notice you're in San Francisco, that means AFA!. You'll be sure to find people to help you and better, awesome plants. I notice a lot of members here have purchased mini-pellia there, give it a try!
And please, don't let the posting end here, make a JOURNAL!!!
BTW 4 hours daily is probably too short, you can't make up for poor lighting by letting it on longer, so I guess it works the same for the opposit.