Thanks, that's some good info. My current frame is a 96ish GT Tempest in purple-blue and I have a 100mm RS Dart 2 fork since '10, new front wheel with BB7 brake, rear is still an old Nexus 7 IGH laced on a 24" Alex rim that I picked up a few years ago for $5 at a garage sale, and now it's starting to give up, so I found a Nexus 3 laced on a 26" rim that I'm gonna swap from a friend, except I had to clean the whole hub and figure out which parts are missing and put it back together, so I'm still waiting on a few little parts from the distributor before I can rebuild the Nexus 3 and get rid of the 24" Nexus 7. Plus I have a rollerbrake in the rear. Currently using the stock triple crank with a recent XT bb and LX derailleur, SRAM X4 front shifter. I can shift almost always in the front, it's really setup perfectly and I get superfast acceleration, but thanks to the whole setup of the bike, it's hard to maintain a decent cruising speed. Lucky with all the traffic lights around here, you find yourself doing accelerations more often then keeping up a good pace.
I'm gonna try to go with maybe a double or single crankset, throw a Marathon Winter 26x1.75 in the front (will be nice and square on a 27mm wide rim) and a CX Pro 26x1.35 in the rear (curious to see if I can maintain my grip and comfort in the rear with less rolling resistance), stick with the same brakeset, seatpost and cockpit. I'll add full fenders and a rear rack, ideally bags too or something I can use as a back-pack at school, but that I can hook on the rack when I commute. Gonna add a few bottle cages or big plastic jars to carry my water and chain/padlock, add safety lights and mounts for real lights, some black reflective tape on the forks front and rear, maybe a wider bar for more room for mounts (found a purple anodized one for $20 on eBay, pretty legit too), and maybe add some air horn and camera mount.
Should get close to $1k in the end. Last time I rode on a rigid steel was with my old Raleigh Summit over 5 years ago and that thing was way too stiff and killing my wrists. My brother's '96 GT Timberline cro-mo is actually very nice and smooth, I really feel confident on that bike, even better after I got him a sweet 2001 Marz' Z5 100mm fork. Too bad that I decided to give him that bike when I first got it second-hand haha. I reckon the Troll all-steel frameset will be somewhat similar to that Timberline and I'll try the Troll fork first and see if my wrists approves. My RS Dart 2 is 4.5 pounds, so quite heavier than the Troll steel fork, but our streets here are even worst than our trails...
I was also thinking of getting rid of the heavy IGH setup and get a disc hub with single cog in the rear, use a singleator-type device and run a triple crank in the front, like a road triple. That'd save so much weight, but I'm still shy of running out of gears when I hit cruising speeds. I guess I would have to size the rear cog by trying out over time.