Well, I think it's pretty well constructed, as far as routine is concerned. You may want to make your warm up just that, though, and do the intervals after the weights, though. But I'm not sure that would matter as it's pretty short anyway.
The weight thing looks like it has everything covered, and you're doing it fairly quick paced, which is not a bad idea at all, especially for your goals. The only thing I question is that you are doing two types of DL's. I know you don''t have squat stands, so I can understand why the DL's. I had a similar problem when I was out at sea. I used to clean the bar and front squat, but when it got rough out, and I almost fell over, I stopped doing that. What I did instead was to use a semi-sumo stance DL to put a little more emphasis on quads and hips, and then did the SLDL's or RDL's for the Ham dominant effect. The other thing is the leg extensions. I wouldn't recommend them for anything other than rehabing an injury. If you must do them, be cautious with weight, they can add extra stress to the knee joint. Overall I think you have a good program. Give it a good honest shot.