As I see the world, one of the best options is the (ROP). Check out the sticky on this subject. I have one. As one who is seriously challenged in terms of building things and putting things together, if I can do it anyone can!
My ROP has the following options: 11W bulb (ROP low) --- est. torch lumens of about 300 for about an hour; 24W bulb (ROP high) --- est. torch lumens = 600 give or take for 30 min. I also have a high temp socket drop-in by Fivemega, where I have used two different Osram bulbs: 1) Osram 64250, 20W --- est. 535 torch lumens for 35-40 min.; 2) Osram 64275, 35W --- est. 870 torch lumens for 20 to 25 min. runtime. Right now, my favorite is the 20W Osram.
If that does not do the trick, you could try the 100W Mag-mod options --- for over 3,000 torch lumens!!
Best of luck!